libbt: lower L2CAP_HIGH_PRI_MIN_XMIT_QUOTA to 6

 * this is what stock does

Change-Id: I06d6e4f63f2b8ff178bded16635b0d317512b72b
diff --git a/include/bdroid_buildcfg.h b/include/bdroid_buildcfg.h
index 2a128d8..2d2205d 100644
--- a/include/bdroid_buildcfg.h
+++ b/include/bdroid_buildcfg.h
@@ -71,7 +71,7 @@
  * SSB-582 Improve data scheduling to HCI when A2DP is involved
  * Ensure that A2DP data is scheduled in a way that suits the scheduling in Coex and BT-only scenarios
  */
-#define L2CAP_HIGH_PRI_MIN_XMIT_QUOTA       13
+#define L2CAP_HIGH_PRI_MIN_XMIT_QUOTA       6
 #define MIN_NUMBER_A2DP_SDUS                3
 
 #endif