Update kernel to builds 7518296 am: 1baf62ab03 am: 116a32ce84 am: 7d46db2155 am: 7a571e8bcc am: 85a3e5b7af am: 8ef0dc33c4

Original change: https://googleplex-android-review.googlesource.com/c/kernel/prebuilts/5.4/x86-64/+/15220030

Change-Id: I6eee304e54d4827d967183ff32d4c9f3f123818b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>