Update kernel to builds 7874781 am: b66c3ac1bb am: 00658648b9 am: 90809e3aac am: 2cf236bd9f

Original change: https://android-review.googlesource.com/c/kernel/prebuilts/mainline/x86-64/+/1884510

Change-Id: I44f37adf453c70a6bbf142317d300b580c2aa3b2