mips64: expected output for mips64 specific tests

Follow up to the previous change in which mips64 specific tests were added.
It covers both MIPS64-LE and MIPS64-BE.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@13411 a5019735-40e9-0310-863c-91ae7b9d1cf9