Menu for debug level

Sming/Kconfig

@@ -73,16 +73,25 @@ mainmenu "Sming Framework Configuration"
     endmenu
 
     menu "Debug"
-        config DEBUG_VERBOSE_LEVEL
-            int "Sets detail for debug messages"
-            default 2
-            help
-                When compiled in debug mode (:envvar:SMING_RELEASE undefined) there are four debug levels in increasing level of verbosity:
+        choice
+            default SELECT_DEBUG_INFO
+            prompt "Sets detail for debug messages"
+            config SELECT_DEBUG_ERROR
+                bool "0 Errors only"
+            config SELECT_DEBUG_WARN
+                bool "1 Errors and warnings"
+            config SELECT_DEBUG_INFO
+                bool "2 Errors, warnings and Information"
+            config SELECT_DEBUG_DEBUG
+                bool "3 All debug messages"
+        endchoice
 
-                * 0: errors
-                * 1: warnings
-                * 2: information (default)
-                * 3: debug
+        config DEBUG_VERBOSE_LEVEL
+            int
+            default 0 if SELECT_DEBUG_ERROR
+            default 1 if SELECT_DEBUG_WARN
+            default 2 if SELECT_DEBUG_INFO
+            default 3 if SELECT_DEBUG_DEBUG
 
         config DEBUG_PRINT_FILENAME_AND_LINE
             bool "Include the filename and line number in every line of debug output."