Merge "Remove unused addKernelPanicSubReason() return value." into main am: 4e4d918689

Original change: https://android-review.googlesource.com/c/platform/system/core/+/2953919

Change-Id: Idd4866e8316657b19995a138c70412e380648760
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>