yocto-bsp: update reference platforms to latest 5.10

Bumping our reference boards to match the latest in OE-core.  Not only
do we get the latest, we fix a configuration warning with genericx86.

(From meta-yocto rev: 8d04d39396cd209395f8aa2f530bd4cd53eac821)

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

meta-yocto-bsp/recipes-kernel/linux/linux-yocto_5.10.bbappend

@@ -7,17 +7,17 @@ KMACHINE_genericx86 ?= "common-pc"
 KMACHINE_genericx86-64 ?= "common-pc-64"
 KMACHINE_beaglebone-yocto ?= "beaglebone"
 
-SRCREV_machine_genericx86 ?= "cdca78778415b4b3bd64e8390ee8adf04bf7e17a"
-SRCREV_machine_genericx86-64 ?= "cdca78778415b4b3bd64e8390ee8adf04bf7e17a"
-SRCREV_machine_edgerouter ?= "2e1fb8f84f09ca768eb531f33a126a40bb90e791"
-SRCREV_machine_beaglebone-yocto ?= "cdca78778415b4b3bd64e8390ee8adf04bf7e17a"
+SRCREV_machine_genericx86 ?= "8c516ced69f41563404ada0bea315a55bcf1df6f"
+SRCREV_machine_genericx86-64 ?= "8c516ced69f41563404ada0bea315a55bcf1df6f"
+SRCREV_machine_edgerouter ?= "965ab3ab746ae8a1158617b6302d9c218ffbbb66"
+SRCREV_machine_beaglebone-yocto ?= "8c516ced69f41563404ada0bea315a55bcf1df6f"
 
 COMPATIBLE_MACHINE_genericx86 = "genericx86"
 COMPATIBLE_MACHINE_genericx86-64 = "genericx86-64"
 COMPATIBLE_MACHINE_edgerouter = "edgerouter"
 COMPATIBLE_MACHINE_beaglebone-yocto = "beaglebone-yocto"
 
-LINUX_VERSION_genericx86 = "5.10.12"
-LINUX_VERSION_genericx86-64 = "5.10.12"
-LINUX_VERSION_edgerouter = "5.10.12"
-LINUX_VERSION_beaglebone-yocto = "5.10.12"
+LINUX_VERSION_genericx86 = "5.10.21"
+LINUX_VERSION_genericx86-64 = "5.10.21"
+LINUX_VERSION_edgerouter = "5.10.21"
+LINUX_VERSION_beaglebone-yocto = "5.10.21"