pcu_sock: set flag PCU_IF_FLAG_SYSMO by setting pcu_direct = 1

The use of PCU_IF_FLAG_SYSMO enable the PCU to use DIRECT_PHY code path.

Change-Id: I1f5407264fc4f209456ffcb73d7853ff315aab86
diff --git a/openbsc/src/libbsc/pcu_sock.c b/openbsc/src/libbsc/pcu_sock.c
index 2186409..0e904db 100644
--- a/openbsc/src/libbsc/pcu_sock.c
+++ b/openbsc/src/libbsc/pcu_sock.c
@@ -46,7 +46,7 @@
 
 static int pcu_sock_send(struct gsm_bts *bts, struct msgb *msg);
 uint32_t trx_get_hlayer1(struct gsm_bts_trx *trx);
-int pcu_direct = 0;
+int pcu_direct = 1;
 
 static const char *sapi_string[] = {
 	[PCU_IF_SAPI_RACH] =	"RACH",