Update kernel to builds 6855663 am: bc77a8cbad

Original change: https://android-review.googlesource.com/c/device/google/cuttlefish_kernel/+/1434524

Change-Id: I8232e0449b45b82acaad90ce4fc216796aa1418e
tree: 68ba14a95e484d241db99108167417f8ef4b19f6
  1. 5.4-arm64/
  2. 5.4-x86_64/
  3. scripts/
  4. Android.bp
  5. METADATA
  6. OWNERS
  7. TEST_MAPPING