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."