gcc-4.6, gcc-4.7: Add support for building mips64 cross compiler

Defaults to n64 ABI

(From OE-Core rev: 253f1f3aebd1a90c55efcc6d1f585204e7f3c371)

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-devtools/gcc/gcc-4.7.inc

@@ -64,6 +64,7 @@ SRC_URI = "svn://gcc.gnu.org/svn/gcc/branches;module=${BRANCH};proto=http \
 	   file://fortran-cross-compile-hack.patch \
 	   file://libgcc-sjlj-check.patch \
 	   file://cpp-honor-sysroot.patch \
+	   file://mips64-default-n64.patch \
 	  "
 
 S = "${TMPDIR}/work-shared/gcc-${PV}-${PR}/${BRANCH}"