[ARM] 4712/2: Adds functions to read and write IXP4xx "feature" bits

Adds functions to read and write IXP4xx "feature" (aka "fuse")
bits, containing information about available/enabled CPU features.

The uncompress.h included by boot/compressed/misc.c resides in
a different space than rest of the kernel and thus can't use
asm/hardware.h (including asm/arch/cpu.h - which, in turn, may use
EXPORTed symbol "processor_id").

Posted to linux-arm-kernel on 2 Dec 2007 and revised.

Signed-off-by: Krzysztof Halasa <khc@pm.waw.pl>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/include/asm-arm/arch-ixp4xx/uncompress.h b/include/asm-arm/arch-ixp4xx/uncompress.h
index f7a35b7..34ef48f 100644
--- a/include/asm-arm/arch-ixp4xx/uncompress.h
+++ b/include/asm-arm/arch-ixp4xx/uncompress.h
@@ -13,7 +13,7 @@
 #ifndef _ARCH_UNCOMPRESS_H_
 #define _ARCH_UNCOMPRESS_H_
 
-#include <asm/hardware.h>
+#include "ixp4xx-regs.h"
 #include <asm/mach-types.h>
 #include <linux/serial_reg.h>