cris is little endian, not big endian (patch from #4048)

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@12773 3c298f89-4303-0410-b956-a3cf2f4a3e73

include/site/cris-linux

-ac_cv_c_littleendian=${ac_cv_c_littleendian=no}
-ac_cv_c_bigendian=${ac_cv_c_bigendian=yes}
+ac_cv_c_littleendian=${ac_cv_c_littleendian=yes}
+ac_cv_c_bigendian=${ac_cv_c_bigendian=no}
 
 ac_cv_sizeof___int64=0
 ac_cv_sizeof_char=1