share debug.[ch] across all executables

This avoids us having to re-define log_info/log_info_cat for each
program.

Change-Id: I22f4f8a51b91ee09c5be26b1ed1bfca41730c577
diff --git a/src/debug.c b/src/debug.c
new file mode 100644
index 0000000..046dc8c
--- /dev/null
+++ b/src/debug.c
@@ -0,0 +1,16 @@
+#include <osmocom/core/logging.h>
+#include <osmocom/core/utils.h>
+#include "debug.h"
+
+static const struct log_info_cat default_categories[] = {
+	[DMAIN] = {
+		.name = "DMAIN",
+		.loglevel = LOGL_DEBUG,
+		.enabled = 1,
+	},
+};
+
+const struct log_info log_info = {
+	.cat = default_categories,
+	.num_cat = ARRAY_SIZE(default_categories),
+};