audio HAL V7: Update track metadata

Add channel mask and audio attributes tags to playback
and record track metadata sent to audio HAL.

The legacy HAL wrapper supports older legacy HAL versions
by sending partial metadata when the legay HAL version is
less than 3.2.

Bug: 168751366
Test: make
Change-Id: Iba3ee3b669e4300201374d4a0d5cf45a04872274
Merged-In: Iba3ee3b669e4300201374d4a0d5cf45a04872274