Change nonsfi i686 target name in libpthread to match other modules
Change nonsfi i686 target name in libpthread to match other modules

No functionality change, but it will reduce bitcode linker warnings about
mismatched target triples.

R=mseaborn@chromium.org
BUG=none

Review URL: https://codereview.chromium.org/747563002

git-svn-id: 721b910a23eff8a86f00c8fd261a7587cddf18f8@14128 fcba33aa-ac0c-11dd-b9e7-8d5594d729c2

sbc100/native_client,sbc100/native_client,sbc100/native_client,sbc100/native_client,sbc100/native_client,sbc100/native_client