[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/mm/proc-xsc3.S b/arch/arm/mm/proc-xsc3.S
index 6ff53c2..6a0adec 100644
--- a/arch/arm/mm/proc-xsc3.S
+++ b/arch/arm/mm/proc-xsc3.S
@@ -28,7 +28,7 @@
 #include <linux/init.h>
 #include <asm/assembler.h>
 #include <asm/elf.h>
-#include <asm/hardware.h>
+#include <asm/arch/hardware.h>
 #include <asm/pgtable.h>
 #include <asm/pgtable-hwdef.h>
 #include <asm/page.h>