mips32: add missing exp file for Bug#320057

r13450 misses the exp file.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@13452 a5019735-40e9-0310-863c-91ae7b9d1cf9
mips32: Update list of ignore files

Update list of ignore files for directory none/tests/mips32.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@13453 a5019735-40e9-0310-863c-91ae7b9d1cf9