Merge "Camera: fix exposure value calculation" into nougat-cts-dev am: 7d50d140d7 am: fdd8b28874 am: f7e5948740 am: 4360604fe3 am: e902704443 am: 0e22c56470
am: c5c1ed8d3c

Change-Id: If20d3dc1118930e891e42483bc49186add3eb3e2