Update kernel to builds 7624876 am: 8189528717 am: d25d946516 am: 0c2fd84ab6

Original change: https://android-review.googlesource.com/c/kernel/prebuilts/4.19/arm64/+/1793370

Change-Id: Iebe18f6b7067da3013e743eac7ca53df90df6c83