Update kernel to builds 6804911 am: 6306a711 am: b977994d am: 5070365c am: 90d7f184 am: fcc9b499 am: 6b06f866 Original change: https://android-review.googlesource.com/c/kernel/prebuilts/mainline/arm64/+/1417228 Change-Id: I0833120254561714d5d173b26917789abece48e0