log: Add new DLSTATS log level

This log level is used by the stats subsystem log reporter to report
statistics to level INFO. Note that the default level of DLSTATS is
NOTICE.

Sponsored-by: On-Waves ehf
diff --git a/src/stats.c b/src/stats.c
index bdb0fbe..b398d07 100644
--- a/src/stats.c
+++ b/src/stats.c
@@ -40,9 +40,6 @@
 #include <osmocom/core/statistics.h>
 #include <osmocom/core/msgb.h>
 
-/* TODO: register properly */
-#define DSTATS DLGLOBAL
-
 #define STATS_DEFAULT_INTERVAL 5 /* secs */
 #define STATS_DEFAULT_STATSD_BUFLEN 256
 
@@ -358,7 +355,7 @@
 	const char *name1, unsigned int index1, const char *name2, int value,
 	const char *unit)
 {
-	LOGP(DSTATS, LOGL_INFO,
+	LOGP(DLSTATS, LOGL_INFO,
 		"stats t=%s p=%s g=%s i=%u n=%s v=%d u=%s\n",
 		type, srep->name_prefix ? srep->name_prefix : "",
 		name1 ? name1 : "", index1,