omap: mux: Allow compiling in new mux code on all mach-omap2 systems

Allow compiling in new mux code on all mach-omap2 systems

Signed-off-by: Tony Lindgren <tony@atomide.com>
diff --git a/arch/arm/mach-omap2/mux.c b/arch/arm/mach-omap2/mux.c
index 76b5bf7..197e295 100644
--- a/arch/arm/mach-omap2/mux.c
+++ b/arch/arm/mach-omap2/mux.c
@@ -372,7 +372,7 @@
 
 /*----------------------------------------------------------------------------*/
 
-#ifdef CONFIG_ARCH_OMAP3
+#ifdef CONFIG_ARCH_OMAP2PLUS
 static LIST_HEAD(muxmodes);
 static DEFINE_MUTEX(muxmode_mutex);