[MIPS] Avoid use of non-existent MIPS dirs with biased bitcode

Follow up to r14127 that broke the smoke test suite build for MIPS.
Toolchain directories do not containing MIPS biased bitcode libraries,
so skip the part that attempts to construct a path to it.
Also it fixes a typo.

BUG= smoke test can not be run for MIPS
TEST= ./scons platform=mips32 smoke_tests

Review URL: https://codereview.chromium.org/751573004

git-svn-id: svn://svn.chromium.org/native_client/trunk/src/native_client/site_scons@14139 fcba33aa-ac0c-11dd-b9e7-8d5594d729c2
1 file changed
tree: 3e26d932f00e4132fc7ba534f93a6439aae9b539
  1. site_tools/
  2. gyp_extract.py
  3. site_init.py
  4. usage_log.py