Update kernel to builds 7855428 am: f4995db555 am: ed542851d7 am: ce8dfc3f74 am: f2902d3e9d

Original change: https://android-review.googlesource.com/c/kernel/prebuilts/mainline/arm64/+/1869478

Change-Id: I9932bf263b1de6cc2ce05ea148d6f59159b6b771