Camera: Add partialResult quirk metadata fields

To be used by HALs to split up capture results into
multiple batches.

Bug: 11115603

Change-Id: I5cfc26b2812f9bf4613944c0679e0e29cfd43616

Conflicts:
	camera/docs/docs.html
	camera/docs/metadata_properties.xml
	camera/include/system/camera_metadata_tags.h