Update kernel to builds 6216675 am: 3df2557e22 am: 52bbf600e8 am: c9342408aa

Change-Id: I9031427301a3286df487690afaa9af2ddacedb53
tree: 565da8de6e04df7a6deb0015281806016ccc1f1e
  1. 5.4-arm64/
  2. 5.4-x86_64/
  3. scripts/
  4. Android.bp
  5. OWNERS
  6. TEST_MAPPING