ARM: mxs: remove unneeded mach-types.h inclusion

Remove the unneeded mach-types.h inclusion from mxs.h, which is a
leftover from commit 845da6bf (ARM: mxs: detect SoC by checking CHIPID
register).
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>

arch/arm/mach-mxs/include/mach/mxs.h

@@ -22,7 +22,6 @@
 #ifndef __ASSEMBLER__
 #include <linux/io.h>
 #endif
-#include <asm/mach-types.h>
 #include <mach/digctl.h>
 #include <mach/hardware.h>