Read product/device RRO dirs separately from soong

This change splits the LOCAL_SOONG_RRO_DIRS into two,
representing RRO dirs that originated from device and
product overlay configs, respectively.

Also plumb the device/product configs in separately.

Bug: 127758779
Test: verify noop on presubmit targets
Change-Id: Iddee1b4d7303b7ecaeced91216ea82fe29123770