db845c/rb5: Switch to android-6.1 as the default kernel version am: 7652f47a76 am: cf31160181 am: a76d8c74ad am: 01fcf3b280 am: 2e52607bf4

Original change: https://android-review.googlesource.com/c/device/linaro/dragonboard/+/2619251

Change-Id: I2fa187264525a69c57f6273e0686988191ea9106
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>