src: rename msg_entr* to osmo_config_*

Summary of changes:

s/msg_entry_parse/osmo_config_list_parse/g
s/msg_entry/osmo_config_entry/g
s/msg_entries/osmo_config_list/g
diff --git a/openbsc/src/osmo-bsc_nat/bsc_nat_utils.c b/openbsc/src/osmo-bsc_nat/bsc_nat_utils.c
index 8765f27..dd32c75 100644
--- a/openbsc/src/osmo-bsc_nat/bsc_nat_utils.c
+++ b/openbsc/src/osmo-bsc_nat/bsc_nat_utils.c
@@ -809,7 +809,7 @@
 	uint8_t msg_type, proto;
 	unsigned int payload_len;
 	struct gsm_mncc_number called;
-	struct msg_entry *entry;
+	struct osmo_config_entry *entry;
 	char *new_number = NULL;
 	struct msgb *out, *sccp;
 	uint8_t *outptr;