mips: Add '-std=gnu11' to vdso CFLAGS

Integrating the following commit(s) to linux-yocto/6.12:

1/1 [
    Author: Khem Raj
    Email: raj.khem@gmail.com
    Subject: mips: Add '-std=gnu11' to vdso CFLAGS
    Date: Wed, 26 Mar 2025 20:24:36 -0700

    GCC 15 changed the default C standard dialect from gnu17 to gnu23,
    which should not have impacted the kernel because it explicitly requests
    the gnu11 standard in the main Makefile. However, mips/vdso code uses
    its own CFLAGS without a '-std=' value, which break with this dialect
    change because of the kernel's own definitions of bool, false, and true
    conflicting with the C23 reserved keywords.

      include/linux/stddef.h:11:9: error: cannot use keyword 'false' as enumeration constant
         11 |         false   = 0,
            |         ^~~~~
      include/linux/stddef.h:11:9: note: 'false' is a keyword with '-std=c23' onwards
      include/linux/types.h:35:33: error: 'bool' cannot be defined via 'typedef'
         35 | typedef _Bool                   bool;
            |                                 ^~~~
      include/linux/types.h:35:33: note: 'bool' is a keyword with '-std=c23' onwards

    Add '-std=gnu11' to the decompressor and purgatory CFLAGS to eliminate
    these errors and make the C standard version of these areas match the
    rest of the kernel.

    Signed-off-by: Khem Raj <raj.khem@gmail.com>
    Cc: stable@vger.kernel.org
    Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>
]

(From OE-Core rev: 832657740c76c63b2e2e9229eb3934c04a5d5ca1)

Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-kernel/linux/linux-yocto-rt_6.12.bb

@@ -14,7 +14,7 @@ python () {
         raise bb.parse.SkipRecipe("Set PREFERRED_PROVIDER_virtual/kernel to linux-yocto-rt to enable it")
 }
 
-SRCREV_machine ?= "9f69ed0ac5f665d431fe52bacdda72534172712b"
+SRCREV_machine ?= "15dd975f84e62ba7b866a96108aff27b97cdbf80"
 SRCREV_meta ?= "d034c1073cb7f88eaf3ce929ba21ba11503729b2"
 
 SRC_URI = "git://git.yoctoproject.org/linux-yocto.git;branch=${KBRANCH};name=machine;protocol=https \

meta/recipes-kernel/linux/linux-yocto-tiny_6.12.bb

@@ -17,7 +17,7 @@ DEPENDS += "openssl-native util-linux-native"
 KMETA = "kernel-meta"
 KCONF_BSP_AUDIT_LEVEL = "2"
 
-SRCREV_machine ?= "b2c792d89ac51b1147810021dddab1e9f38ade9c"
+SRCREV_machine ?= "2ee7ebed771b39a795c227aae81524175abf5d00"
 SRCREV_meta ?= "d034c1073cb7f88eaf3ce929ba21ba11503729b2"
 
 PV = "${LINUX_VERSION}+git"

meta/recipes-kernel/linux/linux-yocto_6.12.bb

@@ -18,17 +18,17 @@ KBRANCH:qemux86.104 ?= "v6.12/standard/base"
 KBRANCH:qemuloongarch64  ?= "v6.12/standard/base"
 KBRANCH:qemumips64 ?= "v6.12/standard/mti-malta64"
 
-SRCREV_machine:qemuarm ?= "f7235e5c375b9ba3d49902dd36d4b66eefc19979"
-SRCREV_machine:qemuarm64 ?= "b2c792d89ac51b1147810021dddab1e9f38ade9c"
-SRCREV_machine:qemuloongarch64 ?= "b2c792d89ac51b1147810021dddab1e9f38ade9c"
-SRCREV_machine:qemumips ?= "c102fc13802679cf23f6a41f9ea54294294f7a93"
-SRCREV_machine:qemuppc ?= "b2c792d89ac51b1147810021dddab1e9f38ade9c"
-SRCREV_machine:qemuriscv64 ?= "b2c792d89ac51b1147810021dddab1e9f38ade9c"
-SRCREV_machine:qemuriscv32 ?= "b2c792d89ac51b1147810021dddab1e9f38ade9c"
-SRCREV_machine:qemux86 ?= "b2c792d89ac51b1147810021dddab1e9f38ade9c"
-SRCREV_machine:qemux86-64 ?= "b2c792d89ac51b1147810021dddab1e9f38ade9c"
-SRCREV_machine:qemumips64 ?= "ee2d5ef2e92ca23c5b345ac50bab130c6a9ad0fc"
-SRCREV_machine ?= "b2c792d89ac51b1147810021dddab1e9f38ade9c"
+SRCREV_machine:qemuarm ?= "3a973aae1addba0ecd7485694d4fcfc624085f24"
+SRCREV_machine:qemuarm64 ?= "2ee7ebed771b39a795c227aae81524175abf5d00"
+SRCREV_machine:qemuloongarch64 ?= "2ee7ebed771b39a795c227aae81524175abf5d00"
+SRCREV_machine:qemumips ?= "fc7877fe6aa5f2a445e17941a5858c7e19a1746d"
+SRCREV_machine:qemuppc ?= "2ee7ebed771b39a795c227aae81524175abf5d00"
+SRCREV_machine:qemuriscv64 ?= "2ee7ebed771b39a795c227aae81524175abf5d00"
+SRCREV_machine:qemuriscv32 ?= "2ee7ebed771b39a795c227aae81524175abf5d00"
+SRCREV_machine:qemux86 ?= "2ee7ebed771b39a795c227aae81524175abf5d00"
+SRCREV_machine:qemux86-64 ?= "2ee7ebed771b39a795c227aae81524175abf5d00"
+SRCREV_machine:qemumips64 ?= "9e2bc57fafb525cb3fbbfab7c7f92bca7e9a43f4"
+SRCREV_machine ?= "2ee7ebed771b39a795c227aae81524175abf5d00"
 SRCREV_meta ?= "d034c1073cb7f88eaf3ce929ba21ba11503729b2"
 
 # set your preferred provider of linux-yocto to 'linux-yocto-upstream', and you'll