QCamera2:HAL: Remove Exif entrie ISO Speed for YUV Sensor.

Avoid populating ISO Speed Exif entrie for YUV sensor.

Change-Id: If082ac6e59c25926daab17e58de940e23fdeb127
CRs-Fixed: 683257
Merge "QCamera2:HAL: Remove Exif entrie ISO Speed for YUV Sensor."
Merge 4962f89e3e23a35129eaea5f387d67ee63a59c50 on remote branch

Change-Id: I44afd5b7e551b665233239626b939fc8385f029a