[ARM] Remove asm/hardware.h, use asm/arch/hardware.h instead

Remove includes of asm/hardware.h in addition to asm/arch/hardware.h.
Then, since asm/hardware.h only exists to include asm/arch/hardware.h,
update everything to directly include asm/arch/hardware.h and remove
asm/hardware.h.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

drivers/pcmcia/pxa2xx_mainstone.c

@@ -21,7 +21,7 @@
 
 #include <pcmcia/ss.h>
 
-#include <asm/hardware.h>
+#include <asm/arch/hardware.h>
 #include <asm/mach-types.h>
 #include <asm/irq.h>