linaro_swr: A generic build target using software rendering am: b2534ba966 am: c627a70ca5

Original change: https://android-review.googlesource.com/c/device/linaro/dragonboard/+/2606600

Change-Id: I567bc9df1b5fae908c2730c21a8ddb4967905c81
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>