serrano: Properly enable ZSL

 * Samsung's magic ZSL depends on TARGET_NEED_CAMERA_ZSL being set
 * Also disable Qualcomm ZSL

This should fix HDR crashing.

Change-Id: I47b8deebc1874dd0f50e68be25dbc3a32e93a8d4
Merge branch 'cm-11.0' into kk_mkt