Fix name of pnacl naclports trybots to match naclports waterfall.
Fix name of pnacl naclports trybots to match naclports waterfall.

BUG=None
TEST=None
TBR=hinoka@chromium.org

Review URL: https://codereview.chromium.org/287193009

git-svn-id: 239fca9b83025a0b6f823aeeca02ba5be3d9fd76@272044 0039d316-1c4b-4281-b951-d872f2087c98

eunchong/build,eunchong/build,eunchong/build,eunchong/build