[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>
diff --git a/arch/arm/plat-iop/io.c b/arch/arm/plat-iop/io.c
index 498675d..c30d188 100644
--- a/arch/arm/plat-iop/io.c
+++ b/arch/arm/plat-iop/io.c
@@ -18,7 +18,7 @@
  */
 #include <linux/kernel.h>
 #include <linux/module.h>
-#include <asm/hardware.h>
+#include <asm/arch/hardware.h>
 #include <asm/io.h>
 
 void * __iomem __iop3xx_ioremap(unsigned long cookie, size_t size,