qemu/bsp: update 4.15 preferred versions to 4.18

4.18 is replacing 4.15 as the latest kernel in the upcoming
release, so we update our preferred versions to match.

(From OE-Core rev: e12f9e7ede7eea408d6a97233c7c8df97e8bfb26)

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

meta/conf/machine/include/x86-base.inc

@@ -18,7 +18,7 @@ SERIAL_CONSOLES ?= "115200;ttyS0"
 # kernel-related variables
 #
 PREFERRED_PROVIDER_virtual/kernel ??= "linux-yocto"
-PREFERRED_VERSION_linux-yocto ??= "4.15%"
+PREFERRED_VERSION_linux-yocto ??= "4.18%"
 
 #
 # XSERVER subcomponents, used to build the XSERVER variable

meta/conf/machine/qemuarm.conf

@@ -16,5 +16,5 @@ QB_MACHINE = "-machine versatilepb"
 QB_KERNEL_CMDLINE_APPEND = "console=ttyAMA0,115200 console=tty"
 # Add the 'virtio-rng-pci' device otherwise the guest may run out of entropy
 QB_OPT_APPEND = "-show-cursor -usb -device usb-tablet -device virtio-rng-pci"
-PREFERRED_VERSION_linux-yocto ??= "4.15%"
+PREFERRED_VERSION_linux-yocto ??= "4.18%"
 QB_DTB = "${@oe.utils.version_less_or_equal('PREFERRED_VERSION_linux-yocto', '4.7', '', 'zImage-versatile-pb.dtb', d)}"