Audioservice: fix A2dp support on Samsung's Audio Policy HAL.

Samsung's audio policy HAL doesn't handle A2DP delay commands
correctly which was merged in JB.
Adds a nodelaya2dp config option.
Signed-off-by: Curtis Menard <curtis.menard@gmail.com>

Change-Id: I8fe8c5ec838fa43e4292c1302b0b0d8a522f5391