arm: Add explicit include of <asm/mach-types.h>

Rather than relying on common.h to provide this include, which is going
away at some point, include it explicitly in each file.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
diff --git a/board/armltd/integrator/integrator.c b/board/armltd/integrator/integrator.c
index fabb8b1..c3bafd4 100644
--- a/board/armltd/integrator/integrator.c
+++ b/board/armltd/integrator/integrator.c
@@ -24,6 +24,7 @@
 #include <dm/platform_data/serial_pl01x.h>
 #include "arm-ebi.h"
 #include "integrator-sc.h"
+#include <asm/mach-types.h>
 
 DECLARE_GLOBAL_DATA_PTR;