Setup correct minimum malloc'd block size for MIPS.

Correct minimum malloc's block size for MIPS is 8.
This fixes massif/tests/big-alloc.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@12974 a5019735-40e9-0310-863c-91ae7b9d1cf9
1 file changed