Update kernel to builds 7518296 am: 1baf62ab03 am: 116a32ce84 am: 7d46db2155

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

Change-Id: I07127b0895ee34fa9b11bec768946842ad528724
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>