Move .lcov_lock to /tmp/ec-lcov-lock
Move .lcov_lock to /tmp/ec-lcov-lock

flock leaves the lock file and git complains about it. Let's move the
lock file to /tmp/ec-lcov-lock.

BUG=chrome-os-partner:19235
TEST=make coverage and check .lcov_lock is in /tmp
BRANCH=None

Change-Id: Id6d68af327b53aa1c0c7ae9186149126d8a5cc37
Signed-off-by: Vic Yang <5fd92abeee651458f98e2856f4f200ee971cee4d@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/62858
Reviewed-by: Vincent Palatin <70a9964ec8fd10b0b08fcc8623c2add25ddf99ac@chromium.org>
Reviewed-by: Randall Spangler <62698fdbb84d1779579ee80c3f39fac22017e5bc@chromium.org>

gelraen/cros-ec,fourier49/BIZ_EC,alterapraxisptyltd/chromium-ec,mtk09422/chromiumos-platform-ec,fourier49/BIZ_EC,coreboot/chrome-ec,md5555/ec,alterapraxisptyltd/chromium-ec,coreboot/chrome-ec,mtk09422/chromiumos-platform-ec,md5555/ec,akappy7/ChromeOS_EC_LED_Diagnostics,fourier49/BIZ_EC,gelraen/cros-ec,fourier49/BZ_DEV_EC,alterapraxisptyltd/chromium-ec,coreboot/chrome-ec,gelraen/cros-ec,akappy7/ChromeOS_EC_LED_Diagnostics,longsleep/ec,thehobn/ec,fourier49/BZ_DEV_EC,alterapraxisptyltd/chromium-ec,thehobn/ec,coreboot/chrome-ec,longsleep/ec,longsleep/ec,longsleep/ec,akappy7/ChromeOS_EC_LED_Diagnostics,eatbyte/chromium-ec,thehobn/ec,mtk09422/chromiumos-platform-ec,fourier49/BIZ_EC,akappy7/ChromeOS_EC_LED_Diagnostics,mtk09422/chromiumos-platform-ec,md5555/ec,coreboot/chrome-ec,eatbyte/chromium-ec,coreboot/chrome-ec,fourier49/BZ_DEV_EC,md5555/ec,gelraen/cros-ec,thehobn/ec,fourier49/BZ_DEV_EC,eatbyte/chromium-ec,eatbyte/chromium-ec,akappy7/ChromeOS_EC_LED_Diagnostics