headers: move log-level definitions to libmctp.h

Since we allow library clients to set the log levels when using a stdio
log implementation (through mctp_set_log_stdio()), we need to expose
values for those log levels.

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
diff --git a/libmctp-log.h b/libmctp-log.h
index 9f90b0a..758bacf 100644
--- a/libmctp-log.h
+++ b/libmctp-log.h
@@ -5,14 +5,6 @@
 
 /* libmctp-internal logging */
 
-/* these should match the syslog-standard LOG_* definitions, for
- * easier use with syslog */
-#define MCTP_LOG_ERR		3
-#define MCTP_LOG_WARNING	4
-#define MCTP_LOG_NOTICE		5
-#define MCTP_LOG_INFO		6
-#define MCTP_LOG_DEBUG		7
-
 void mctp_prlog(int level, const char *fmt, ...)
 	__attribute__((format(printf, 2, 3)));
 
diff --git a/libmctp.h b/libmctp.h
index 36babe5..f0633e3 100644
--- a/libmctp.h
+++ b/libmctp.h
@@ -104,10 +104,19 @@
 		void *(realloc)(void *, size_t));
 
 /* environment-specific logging */
+
 void mctp_set_log_stdio(int level);
 void mctp_set_log_syslog(void);
 void mctp_set_log_custom(void (*fn)(int, const char *, va_list));
 
+/* these should match the syslog-standard LOG_* definitions, for
+ * easier use with syslog */
+#define MCTP_LOG_ERR		3
+#define MCTP_LOG_WARNING	4
+#define MCTP_LOG_NOTICE		5
+#define MCTP_LOG_INFO		6
+#define MCTP_LOG_DEBUG		7
+
 
 #ifdef __cplusplus
 }