Update kernel to build 6173430 am: 1223f80495

Change-Id: Idf85f94429655476bd2e2774334c6c7add414737
tree: a9e1ae2ce76cae1d68f53b84e1bed7bdf44ef45d
  1. 5.4-arm64/
  2. 5.4-x86_64/
  3. scripts/
  4. Android.bp
  5. OWNERS
  6. TEST_MAPPING