d2: add missing ISO 1600 mode

Change-Id: I801d45866b64f5860c1b50479a2ef00c55a8699b

Conflicts:
	BoardConfigCommon.mk

Change-Id: I801d45866b64f5860c1b50479a2ef00c55a8699b
Enable ZSL

Move overlay from Gallery2 to Camera2, and remove all the options except
enable zsl since the rest don't exist (anymore/yet)

Change-Id: I8973e5760cda36d19ff90d4c16ef3c70075c9fe8