a2dp-codecs: Fix SBC_MAX_BITPOOL and add SBC quality modes

a2dp-codecs: Fix SBC_MAX_BITPOOL and add SBC quality modes

According to A2DP specification; section SBC; Codec Specific Information
Elements; Minimum / Maximum Bitpool Value, range for Bitpool value is from
2 to 250.

A2DP specification also defines bitpool values for two SBC modes: Middle
Quality and High Quality. They depends on channel mode and frequency. So
add definitions for them into a2dp-codecs file too.

File android/hal-audio-sbc.c was updated to use High Quality mode for
chosen frequency.

Change-Id: I77cfd4c13314abf223e64cec5bab98f1d42b92a6
Signed-off-by: himanshu <h.himanshu@samsung.com>