Revert of Generalize V4L2 HW video codec device names

Revert of Generalize V4L2 HW video codec device names (patchset #3 id:40001 of https://codereview.chromium.org/786993002/)

Reason for revert:
Still hitting crbug.com/439175 on Pit.

Original issue's description:
> Generalize V4L2 HW video codec device names
>
> Switch to more generalized V4L2 video accelerator device names and update
> sandbox rules to reflect that.
>
> After video_ChromeHWDecodeUsed autotest is fixed, this cl is submitted again
> due to crrev.com/730693005 reverted in crrev.com/784553004.
>
> BUG=405861, 437598, 439175
> TEST=passed video_ChromeHWDecodeUsed with h264 and vp8 on peach_pit.
> Media.GpuVideoDecoderInitializeStatus value is 0 when playing a video
> from youtube. DUT only has /dev/video-enc and /dev/video-dec device nodes.
>
> Committed: https://crrev.com/b777ad3f16655a3493a0ecd9975c58a7b84c740d
> Cr-Commit-Position: refs/heads/master@{#307674}

TBR=jorgelo@chromium.org,wuchengli@chromium.org,scherkus@chromium.org,henryhsu@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=405861, 437598, 439175
Committed: https://crrev.com/157c05e80bf3cdbd10a0c472e242745ca917fa8b
Cr-Commit-Position: refs/heads/master@{#308257}

[Pawel Osciak, 2014-12-13 07:03:50]

Created Revert of Generalize V4L2 HW video codec device names

[commit-bot: I haz the power, 2014-12-13 07:04:48]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/792123006/1

[commit-bot: I haz the power, 2014-12-13 07:05:34]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2014-12-13 07:06:18]

Patchset 1 (id:??) landed as
https://crrev.com/157c05e80bf3cdbd10a0c472e242745ca917fa8b
Cr-Commit-Position: refs/heads/master@{#308257}