[ARM] pxa: remove unnecessary #include of pxa-regs.h and hardware.h

pxa-regs.h and hardware.h are not intended for use directly in driver
code, remove those unnecessary references.

Signed-off-by: Eric Miao <eric.miao@marvell.com>

drivers/pcmcia/pxa2xx_viper.c

@@ -26,7 +26,6 @@
 
 #include <asm/irq.h>
 
-#include <mach/pxa-regs.h>
 #include <mach/viper.h>
 #include <asm/mach-types.h>