db845c: Add support for cache partition am: 70f37c6519 am: 0a3a97805e am: 4ed7b7c001 am: 742c32216b

Original change: https://android-review.googlesource.com/c/device/linaro/dragonboard/+/1449168

Change-Id: Ia3b2c635f986d747dd7c482c1a42eec21ab2bd3b