Update kernel to builds 7394718 am: a84ff92187 am: d67653c5b9 am: 885de323d1 am: ab0e7677f3

Original change: https://android-review.googlesource.com/c/kernel/prebuilts/5.4/arm64/+/1715705

Change-Id: I87b0c05f6530515604b0d2eaeccdf68b993d5e50