Ensure we have enough space in our reported max uniform buffer counts for our dedicated internal constant buffers.

TRAC #22892

Signed-off-by: Nicolas Capens
Signed-off-by: Shannon Woods
Author: Jamie Madill

git-svn-id: https://angleproject.googlecode.com/svn/branches/es3proto@2337 736b8ea6-26fd-11df-bfd4-992fa37f6226