Rename tbf_alloc_dl_tbf() -> dl_tbf_alloc()

Rename it so that it follows the usual prefix for the type it allocates.

Change-Id: I7d30a85fefaa61d100fbd51af4601a3cf7de2159
diff --git a/tests/app_info/AppInfoTest.cpp b/tests/app_info/AppInfoTest.cpp
index 9530d09..6806f20 100644
--- a/tests/app_info/AppInfoTest.cpp
+++ b/tests/app_info/AppInfoTest.cpp
@@ -88,9 +88,9 @@
 	trx->pdch[7].enable();
 
 	ms1 = bts_alloc_ms(bts, 10, 11);
-	tbf1 = tbf_alloc_dl_tbf(bts, ms1, 0, false);
+	tbf1 = dl_tbf_alloc(bts, ms1, 0, false);
 	ms2 = bts_alloc_ms(bts, 12, 13);
-	tbf2 = tbf_alloc_dl_tbf(bts, ms2, 0, false);
+	tbf2 = dl_tbf_alloc(bts, ms2, 0, false);
 
 	fprintf(stderr, "\n");
 }