qcms: Limit vcgt table to a maximum of 1024 entries

qcms: Limit vcgt table to a maximum of 1024 entries

This is a reasonable limit on the size of the vcgt to permit; this will
prevent rogue data potentially causing an OOM situation.

TEST=With test file blue-vcgt-test-color-profile-1024.icc observe that
the vcgt data is parsed and made available through the API but with
blue-vcgt-test-color-profile-2048.icc the vcgt is ignored.
R=noel@chromium.org
BUG=471749
Committed: https://crrev.com/4cc1320a9ba15971f5d67f704b5e732d61ba2cdd
Cr-Commit-Position: refs/heads/master@{#328966}

[Noel Gordon, 2015-05-08 14:37:43]

LGTM

[Noel Gordon, 2015-05-08 14:38:59]

The CQ bit was checked by noel@chromium.org

[commit-bot: I haz the power, 2015-05-08 14:39:12]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1138473002/1

[commit-bot: I haz the power, 2015-05-08 16:38:20]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-05-08 16:39:25]

Patchset 1 (id:??) landed as
https://crrev.com/4cc1320a9ba15971f5d67f704b5e732d61ba2cdd
Cr-Commit-Position: refs/heads/master@{#328966}