Fix lunch choices for git_main am: d319529aed

Original change: https://android-review.googlesource.com/c/device/linaro/hikey/+/2811373

Change-Id: Ia9da36391954f64f24eb5acbf1d4b3fc5b299899
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>