ARM: tegra: Make pinmux.h standalone includible

This header file uses type definitions (u8, u32) from linux/types.h but
doesn't include it. If includes aren't carefully ordered this can cause
build failures.

Cc: Tom Warren <twarren@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>

arch/arm/include/asm/arch-tegra/pinmux.h

@@ -8,6 +8,8 @@
 #ifndef _TEGRA_PINMUX_H_
 #define _TEGRA_PINMUX_H_
 
+#include <linux/types.h>
+
 #include <asm/arch/tegra.h>
 
 /* The pullup/pulldown state of a pin group */