linux-gbmc: Add ARM_PATCH_PHYS_VIRT for ARMv7

We want to make sure we have a relocatable kernel so that Kdump can
execute out of the crashkernel region. Without it, Kdump will never
execute.

Tested: Booted on AMD Rome and verified that Kdump is now working with
this option enabled.

Google-Bug-Id: 382137439
Change-Id: Id7e18bc42b9b659d4b693743a0485f86e9802ccb
Signed-off-by: William A. Kennington III <wak@google.com>
diff --git a/recipes-kernel/linux/files/defconfig b/recipes-kernel/linux/files/defconfig
index 327a24a..49cc3ec 100644
--- a/recipes-kernel/linux/files/defconfig
+++ b/recipes-kernel/linux/files/defconfig
@@ -135,6 +135,7 @@
 CONFIG_MEMCG=y
 
 # Platform Specific Options
+CONFIG_ARM_PATCH_PHYS_VIRT=y armv7
 CONFIG_ARCH_MULTI_V7=y armv7
 CONFIG_ARM_CPU_TOPOLOGY=y armv7
 CONFIG_ARCH_NPCM=y npcm