arm: rmobile: Include <asm/types.h> in header

We don't want to rely on source files including <asm/types.h> before
<asm/arch/rmobile.h>.

Signed-off-by: Paul Barker <paul.barker.ct@bp.renesas.com>
Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
diff --git a/arch/arm/mach-rmobile/include/mach/rmobile.h b/arch/arm/mach-rmobile/include/mach/rmobile.h
index d326d55..053ad08 100644
--- a/arch/arm/mach-rmobile/include/mach/rmobile.h
+++ b/arch/arm/mach-rmobile/include/mach/rmobile.h
@@ -45,6 +45,8 @@
 #define RMOBILE_CPU_TYPE_R8A779G0	0x5C
 
 #ifndef __ASSEMBLY__
+#include <asm/types.h>
+
 const u8 *rzg_get_cpu_name(void);
 u32 rmobile_get_cpu_type(void);
 u32 rmobile_get_cpu_rev_integer(void);