edge: Rename rcv_data_block_acknowledged

This commit renames rcv_data_block_acknowledged to
rcv_data_block_acknowledged_gprs to separate it from EGPRS data block
decoding.

Sponsored-by: On-Waves ehf
diff --git a/src/tbf.h b/src/tbf.h
index 2835926..7b13eeb 100644
--- a/src/tbf.h
+++ b/src/tbf.h
@@ -421,7 +421,7 @@
 	struct msgb *create_ul_ack(uint32_t fn);
 
 	/* blocks were acked */
-	int rcv_data_block_acknowledged(const uint8_t *data, size_t len,
+	int rcv_data_block_acknowledged_gprs(const uint8_t *data, size_t len,
 		struct pcu_l1_meas *meas);
 
 	/* TODO: extract LLC class? */