[ARM] pxa: avoid polluting the kernel's namespace

Avoid unnecessarily pollution of the kernel's namespace by avoiding
mach/hardware.h.  Include this header file where necessary.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/mach-pxa/smemc.c b/arch/arm/mach-pxa/smemc.c
index ad346ad..d6f6904 100644
--- a/arch/arm/mach-pxa/smemc.c
+++ b/arch/arm/mach-pxa/smemc.c
@@ -8,6 +8,8 @@
 #include <linux/io.h>
 #include <linux/sysdev.h>
 
+#include <mach/hardware.h>
+
 #define SMEMC_PHYS_BASE	(0x4A000000)
 #define SMEMC_PHYS_SIZE	(0x90)