Increase SDP buffer from 750 bytes to 4096 bytes

Bug 18670169

Change-Id: Ida1a6a57dcce94339a190974af4565f14157cdc2
diff --git a/bta/gatt/bta_gattc_cache.c b/bta/gatt/bta_gattc_cache.c
index 65026ba..db9ebb6 100644
--- a/bta/gatt/bta_gattc_cache.c
+++ b/bta/gatt/bta_gattc_cache.c
@@ -40,7 +40,7 @@
 static void bta_gattc_char_dscpt_disc_cmpl(UINT16 conn_id, tBTA_GATTC_SERV *p_srvc_cb);
 static tBTA_GATT_STATUS bta_gattc_sdp_service_disc(UINT16 conn_id, tBTA_GATTC_SERV *p_server_cb);
 
-#define BTA_GATT_SDP_DB_SIZE 750
+#define BTA_GATT_SDP_DB_SIZE 4096
 
 /*****************************************************************************
 **  Constants