Remove error message for GetMSC when drawable is not fullscreen
Remove error message for GetMSC when drawable is not fullscreen

DRI2 test applications (glmark, glbench, etc.) are not run full screen,
and hence will not have a valid crtc_index.
This will error-out MSC requests, but since this isn't a real error
condition, don't print an error message to the log.

Signed-off-by: Daniel Kurtz <31914e832df1cd8e5daa417106c0c6f5297b27d7@chromium.org>

BUG=chromium:223001
TEST=Run glbench on daisy.
     Inspect /var/log/Xorg.1.log
     There should be no messages like this:
  (EE) ARMSOC(0): ERROR: No crtc associated with given drawable

Change-Id: Ib836f4dd44f0e5d8fae32c7a06304bf8b22b3fa0
Reviewed-on: https://gerrit.chromium.org/gerrit/46211
Reviewed-by: Daniel Kurtz <31914e832df1cd8e5daa417106c0c6f5297b27d7@chromium.org>
Tested-by: Daniel Kurtz <31914e832df1cd8e5daa417106c0c6f5297b27d7@chromium.org>
Reviewed-by: Ryan Harrison <f6e83b88f802fc4054f7d3d5ce45628543f8e7d9@chromium.org>
Commit-Queue: Daniel Kurtz <31914e832df1cd8e5daa417106c0c6f5297b27d7@chromium.org>

markyzq/armsoc-rockchip,markyzq/armsoc-rockchip