Update kernel to builds 6508545 am: a7030b0263

Change-Id: I22c71afcc95762962ffce95c4f418f6f13bda1d7
tree: 4a90ad823212dac22d48bb2f486e764f4771a4ca
  1. 5.4-arm64/
  2. 5.4-x86_64/
  3. scripts/
  4. Android.bp
  5. OWNERS
  6. TEST_MAPPING