[ARM] 3097/1: change library link ordering

Patch from Nicolas Pitre

We have an optimized sha1 routine (arch/arm/lib/sha1.S) meant to
override the generic one in lib/sha1.c.

Unfortunately lib/lib.a is listed _before_ arch/arm/lib/lib.a in the
link argument list and therefore the architecture specific lib functions
are not picked up before the generic versions.

This patch is a quick fix to change that ordering for ARM.  Here's what
the kbuild maintainer had to say about it (was also CC'd on lkml):

On Wed, 2 Nov 2005, Sam Ravnborg wrote:
> This looks like an obvious way to achive correct ordering.
> We could change it so arch defines always took precedence but
> the above is so simple that it is not worth the effort.
Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

arch/arm/Makefile

@@ -144,7 +144,7 @@ drivers-$(CONFIG_OPROFILE)      += arch/arm/oprofile/
 drivers-$(CONFIG_ARCH_CLPS7500)	+= drivers/acorn/char/
 drivers-$(CONFIG_ARCH_L7200)	+= drivers/acorn/char/
 
-libs-y				+= arch/arm/lib/
+libs-y				:= arch/arm/lib/ $(libs-y)
 
 # Default target when executing plain make
 ifeq ($(CONFIG_XIP_KERNEL),y)