Fix performance regression in video_init

When disabling non-main-monitors, enumerate through connectors and
disable the associated crtc's rather than enumerating across all
crtcs.   This regresion was introduced in
5c9afa7c8f9443a699cf5028e2b876ee4c257a4e.

BUG=chromium:471941
TEST=bootstat_summary on Link and Parrot_freon.

Change-Id: I0f09f366b3072eb080402f5e340d1fc588ae9e6c
Reviewed-on: https://chromium-review.googlesource.com/263789
Reviewed-by: Stéphane Marchesin <marcheu@chromium.org>
Commit-Queue: David Sodman <dsodman@chromium.org>
Tested-by: David Sodman <dsodman@chromium.org>
1 file changed