merge_dtbs: Craft unique name for final saved merged trees

Incorporate the hash of a combination of all msm-ids, board-ids, and
pmic-ids of the InnerMergedDeviceTree in the final filenames of the
saved InnerMergedDeviceTrees.

Change-Id: I629e1a274b23d71061c547578d1ddbcf92c8cf79
Signed-off-by: Guru Das Srinagesh <quic_gurus@quicinc.com>
Signed-off-by: Jis G Jacob <studiokeys@blissroms.org>
1 file changed