clk: renesas: cpg-mssr: Fix inverted debug check

The intention was to enable the checks if debugging is enabled, not
disabled.

Fixes: f793d1e5 ("clk: shmobile: Add new CPG/MSSR driver core")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

drivers/clk/renesas/renesas-cpg-mssr.c

@@ -33,9 +33,9 @@
 #include "clk-div6.h"
 
 #ifdef DEBUG
-#define WARN_DEBUG(x)	do { } while (0)
-#else
 #define WARN_DEBUG(x)	WARN_ON(x)
+#else
+#define WARN_DEBUG(x)	do { } while (0)
 #endif