Hammerhead: enable Ambient Display

Change-Id: Ic112d69bd88e0dd9af8d5b653441ee1bf17b0b83
Battery saver: Add ambient display to feature disclosure.

Bug: 17164834
Change-Id: Ie9242bccfa5d107afff4d38c0677314d4ade250a
Battery saver: Add period to last sentence of disclosure.

Bug:17166240
Change-Id: I87d1b042120e9a9773487e611479c20670dee5f8
Add support for USB OTG

Change-Id: Id5ded1d14f01e4bd126115866e0bf3bd75d5cfcb
hammerhead: Enable QCOM bionic optimization

Change-Id: I47cfe28c2d04c1ff5903958624583d70e84ca979
Add extract files script

Thanks: Cyanogenmod
hammerhead: Update proprietary blobs to LRX21O

Update setup script accordingly.

Change-Id: I8f5b6f6b2aad2af3cfcd913454644013012131ea

Conflicts:
	setup-makefiles.sh