Update kernel to builds 7321179 am: 0647cb11d4 am: d9109bca8d am: d8cb03b4e9

Original change: https://android-review.googlesource.com/c/kernel/prebuilts/4.19/arm64/+/1690219

Change-Id: I2c0de1e505bc832308193905ee8d9ad0266880ba