pcu_sock: use correct SAPI in message PCUIF PCU_IF_MSG_DATA_CNF_DT

The message PCU_IF_MSG_DATA_CNF_DT uses SAPI PCU_IF_SAPI_PCH, which is
formally not correct. It should use SAPI PCU_IF_SAPI_PCH_DT

Depends: osmo-pcu.git I0883b51fc232ec0267f1511c3a37c0bcd0967a08
Change-Id: Id5c799e625c56e57f7b51cd4fb57f5bea9c973d2
---
M src/osmo-bsc/pcu_sock.c
1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/src/osmo-bsc/pcu_sock.c b/src/osmo-bsc/pcu_sock.c
index 32307ff..8a1d5b0 100644
--- a/src/osmo-bsc/pcu_sock.c
+++ b/src/osmo-bsc/pcu_sock.c
@@ -450,7 +450,7 @@
 	pcu_prim = (struct gsm_pcu_if *) msg->data;
 	data_cnf_dt = &pcu_prim->u.data_cnf_dt;
 
-	data_cnf_dt->sapi = PCU_IF_SAPI_PCH;
+	data_cnf_dt->sapi = PCU_IF_SAPI_PCH_DT;
 	data_cnf_dt->tlli = tlli;
 
 	return pcu_sock_send(bts->network, msg);

