MFD: ucb1x00-core: get rid of mach/hardware.h include

Nothing in this driver requires anything from the machine/platform
headers, so remove this needless header file.
Acked-by: Jochen Friedrich <jochen@scram.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

drivers/mfd/ucb1x00-core.c

@@ -29,8 +29,6 @@
 #include <linux/gpio.h>
 #include <linux/semaphore.h>
 
-#include <mach/hardware.h>
-
 static DEFINE_MUTEX(ucb1x00_mutex);
 static LIST_HEAD(ucb1x00_drivers);
 static LIST_HEAD(ucb1x00_devices);