AVRCP: Fix returned attributes for Genre/Play Time

Usecase:

1) Connect DUT with remote device supporting AVRCP 1.4
2) Send request to retrieve genre or play time attributes.

Observation:
DUT returns incorrect attribute id

Root cause:
Missing break in code leading to corruption of values of attributes returned.

Fix:
Add break statement missing in code.

Test: Checked that genre and play time attributes are returned correctly by DUT.

Bug: 38372332
Change-Id: I0ec2f3b8bfc6668819a207046ceb65659037b368