[cogl] build: Fix building clutter on armv4t devices

[Robert Bragg <rbragg src gnome org>]

commit 20f2d51392b2c90c18b250210892931079a3a0b5
Author: Joshua Lock <josh linux intel com>
Date:   Thu Jan 5 20:09:44 2012 +0000

    build: Fix building clutter on armv4t devices
    
    GCC will define __ARM_ARCH_4T__ when building with "-march=armv4t" so we
    can check this to turn off the use of 'clz' instructions, which
    otherwise would cause compile errors like "selected processor does not
    support ARM mode `clz r3,r0'".
    
    Signed-off-by: Wolfgang Denk <wd denx de>
    Signed-off-by: Joshua Lock <josh linux intel com>
    Reviewed-by: Robert Bragg <robert linux intel com>
    Reviewed-by: Emmanuele Bassi <ebassi linux intel com>

 cogl/cogl-fixed.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/cogl/cogl-fixed.c b/cogl/cogl-fixed.c
index f56c28e..7a00cb6 100644
--- a/cogl/cogl-fixed.c
+++ b/cogl/cogl-fixed.c
@@ -629,7 +629,7 @@ cogl_fixed_sqrt (CoglFixed x)
 	/*
 	 * Find the highest bit set
 	 */
-#if defined (__arm__)
+#if defined (__arm__) && !defined(__ARM_ARCH_4T__)
 	/* This actually requires at least arm v5, but gcc does not seem
 	 * to set the architecture defines correctly, and it is I think
 	 * very unlikely that anyone will want to use clutter on anything