Work around OMAP2_CTRL_BASE warnings in 3430 build

Work around OMAP2_CTRL_BASE redefinition warnings for OMAP3430 builds.
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

include/asm-arm/arch-omap/omap24xx.h

@@ -101,7 +101,7 @@
 #define OMAP2_VA_IC_BASE	IO_ADDRESS(OMAP24XX_IC_BASE)
 #define OMAP2_CTRL_BASE		OMAP243X_CTRL_BASE
 
-#else
+#elif !defined(CONFIG_ARCH_OMAP34XX)
 /* FIXME: These will go away soon */
 #define OMAP2_CTRL_BASE		L4_24XX_BASE
 #endif