rspro_client_fsm: Mark ipa_client_conn_send_rspro() as static

Change-Id: Icc2f9e984dee4a2f1f604beee6c9081ecf032dd2
diff --git a/src/rspro_client_fsm.c b/src/rspro_client_fsm.c
index 91e91eb..f0a9fff 100644
--- a/src/rspro_client_fsm.c
+++ b/src/rspro_client_fsm.c
@@ -64,7 +64,7 @@
 	/* msg_tx is now queued and will be freed. */
 }
 
-int ipa_client_conn_send_rspro(struct ipa_client_conn *ipa, RsproPDU_t *rspro)
+static int ipa_client_conn_send_rspro(struct ipa_client_conn *ipa, RsproPDU_t *rspro)
 {
 	struct msgb *msg = rspro_enc_msg(rspro);
 	if (!msg) {