include/linux/kconfig.h: ese macros which are already defined

It is better to use macros which are already available because then there
is just one location which needs to be change.

[akpm@linux-foundation.org: move IS_ENABLED definition to after the IS_BUILTIN and IS_MODULE definitions]
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

include/linux/kconfig.h

@@ -22,14 +22,6 @@
 #define __config_enabled(arg1_or_junk) ___config_enabled(arg1_or_junk 1, 0)
 #define ___config_enabled(__ignored, val, ...) val
 
-/*
- * IS_ENABLED(CONFIG_FOO) evaluates to 1 if CONFIG_FOO is set to 'y' or 'm',
- * 0 otherwise.
- *
- */
-#define IS_ENABLED(option) \
-	(config_enabled(option) || config_enabled(option##_MODULE))
-
 /*
  * IS_BUILTIN(CONFIG_FOO) evaluates to 1 if CONFIG_FOO is set to 'y', 0
  * otherwise. For boolean options, this is equivalent to
@@ -43,4 +35,11 @@
  */
 #define IS_MODULE(option) config_enabled(option##_MODULE)
 
+/*
+ * IS_ENABLED(CONFIG_FOO) evaluates to 1 if CONFIG_FOO is set to 'y' or 'm',
+ * 0 otherwise.
+ */
+#define IS_ENABLED(option) \
+	(IS_BUILTIN(option) || IS_MODULE(option))
+
 #endif /* __LINUX_KCONFIG_H */