Rename tbf_alloc_ul_tbf -> ul_tbf_alloc

Use proper prefix according to the type being allocated.

Change-Id: Ic98c3c852c96c3f52f1c8f531b8d0fd28ce5aef5
diff --git a/src/gprs_ms.c b/src/gprs_ms.c
index 5bf929e..57d8a19 100644
--- a/src/gprs_ms.c
+++ b/src/gprs_ms.c
@@ -1068,7 +1068,7 @@
 	const bool single_slot = false;
 	struct gprs_rlcmac_ul_tbf *ul_tbf;
 
-	ul_tbf = tbf_alloc_ul_tbf(ms->bts, ms, use_trx, single_slot);
+	ul_tbf = ul_tbf_alloc(ms->bts, ms, use_trx, single_slot);
 	if (!ul_tbf) {
 		LOGPMS(ms, DTBF, LOGL_NOTICE, "No PDCH resource\n");
 		/* Caller will most probably send a Imm Ass Reject after return */
@@ -1087,7 +1087,7 @@
 	const bool single_slot = true;
 	struct gprs_rlcmac_ul_tbf *ul_tbf;
 
-	ul_tbf = tbf_alloc_ul_tbf(ms->bts, ms, trx_no, single_slot);
+	ul_tbf = ul_tbf_alloc(ms->bts, ms, trx_no, single_slot);
 	if (!ul_tbf) {
 		LOGP(DTBF, LOGL_NOTICE, "No PDCH resource for Uplink TBF\n");
 		/* Caller will most probably send a Imm Ass Reject after return */