[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/mach-sa1100/hackkit.c b/arch/arm/mach-sa1100/hackkit.c
index 046b213..270feb0 100644
--- a/arch/arm/mach-sa1100/hackkit.c
+++ b/arch/arm/mach-sa1100/hackkit.c
@@ -22,7 +22,7 @@
 #include <linux/mtd/mtd.h>
 #include <linux/mtd/partitions.h>
 
-#include <asm/hardware.h>
+#include <asm/arch/hardware.h>
 #include <asm/mach-types.h>
 #include <asm/setup.h>
 #include <asm/page.h>