Add kernel test modules for Android 12 GKI 5.4

7855344 Android 12 GKI 5.4 Oct, 2021
7732866 Android 12 GKI 5.4 Sep, 2021

Bug: 204516946
Test: # Set up GKI_DIR and export it.
      $ export GKI_BID=7732866
      $ make ARCH=arm64 CROSS_COMPILE=aarch64 LLVM=1 LLVM_IAS=1 LTO=thin
      $ ls prebuilts
      kmi_sym-a12-5.4-7732866.ko
      # On any arm64 Android 12 device running GKI 5.4
      $ insmod /data/local/tmp/kmi_sym-a12-5.4-7732866.ko; echo $?
      0
      $ lsmod | grep kmi
      kmi_sym                53248  0
      $ rmmod kmi_sym
      $ dmesg | grep GKI
      [  122.637127] GKI build: 7732866
      [  122.637391] 4332 GKI KMI symbols at 00000000d17bba78
      [  138.187845] Cleaning up GKI KMI test.
Change-Id: I117cc46d0f0cf5d50e383ed224f3600a055c5f70
6 files changed