Rename tbf_alloc_ul_tbf -> ul_tbf_alloc

Use proper prefix according to the type being allocated.

Change-Id: Ic98c3c852c96c3f52f1c8f531b8d0fd28ce5aef5
diff --git a/src/tbf_ul.cpp b/src/tbf_ul.cpp
index 6edf8be..07f562a 100644
--- a/src/tbf_ul.cpp
+++ b/src/tbf_ul.cpp
@@ -104,7 +104,7 @@
 }
 
 /* Generic function to alloc a UL TBF, later configured to be assigned either over CCCH or PACCH */
-struct gprs_rlcmac_ul_tbf *tbf_alloc_ul_tbf(struct gprs_rlcmac_bts *bts, struct GprsMs *ms, int8_t use_trx, bool single_slot)
+struct gprs_rlcmac_ul_tbf *ul_tbf_alloc(struct gprs_rlcmac_bts *bts, struct GprsMs *ms, int8_t use_trx, bool single_slot)
 {
 	struct gprs_rlcmac_ul_tbf *tbf;
 	int rc;