lint: patch: fix misc cros lint errors
lint: patch: fix misc cros lint errors

BUG=chromium:327969
TEST=`cros lint lib/patch_unittest.py` doesn't complain
TEST=`./buildbot/run_tests` passes

Change-Id: Iff353082cf808f0db410c9ff5ff9fcf08fe6a879
Reviewed-on: https://chromium-review.googlesource.com/179793
Reviewed-by: Stefan Zager <542cb5b73770f9741bae40d34cf7a192bc7ad2cc@chromium.org>
Commit-Queue: Mike Frysinger <8f3f75c74bd5184edcfa6534cab3c13a00a2f794@chromium.org>
Tested-by: Mike Frysinger <8f3f75c74bd5184edcfa6534cab3c13a00a2f794@chromium.org>

bpsinc-native/src_third_party_chromite,bpsinc-native/src_third_party_chromite,bpsinc-native/src_third_party_chromite,chadversary/chromiumos.chromite,chadversary/chromiumos.chromite