The LINK_SPEC for linux gets overwritten by linux-eabi.h which
means the value of TARGET_FIX_V4BX_SPEC gets lost and as a result
the option is not passed to linker when chosing march=armv4
This patch redefines this in linux-eabi.h and reinserts it
for eabi defaulting toolchains.

We might want to send it upstream

Upstream-Status: Pending

-Khem
Index: gcc-4_7-branch/gcc/config/arm/linux-eabi.h
===================================================================
--- gcc-4_7-branch.orig/gcc/config/arm/linux-eabi.h	2012-08-21 22:54:12.448453417 -0700
+++ gcc-4_7-branch/gcc/config/arm/linux-eabi.h	2012-08-21 23:05:18.008478722 -0700
@@ -78,10 +78,14 @@
      %{mfloat-abi=soft*:" GLIBC_DYNAMIC_LINKER_SOFT_FLOAT "} \
      %{!mfloat-abi=*:" GLIBC_DYNAMIC_LINKER_DEFAULT "}"
 
+/* For armv4 we pass --fix-v4bx to linker to support EABI */
+#undef TARGET_FIX_V4BX_SPEC
+#define TARGET_FIX_V4BX_SPEC "%{mcpu=arm8|mcpu=arm810|mcpu=strongarm*|march=armv4: --fix-v4bx}"
+
 /* At this point, bpabi.h will have clobbered LINK_SPEC.  We want to
    use the GNU/Linux version, not the generic BPABI version.  */
 #undef  LINK_SPEC
-#define LINK_SPEC BE8_LINK_SPEC						\
+#define LINK_SPEC BE8_LINK_SPEC TARGET_FIX_V4BX_SPEC			\
   LINUX_OR_ANDROID_LD (LINUX_TARGET_LINK_SPEC,				\
 		       LINUX_TARGET_LINK_SPEC " " ANDROID_LINK_SPEC)