We currently don't support EGL configs/surfaces with sRGB formats.

Change-Id: Ie23a5121bec784fe807c03feae19442fece3f1d7
Reviewed-on: https://swiftshader-review.googlesource.com/11268Tested-by: Nicolas Capens <nicolascapens@google.com>
Reviewed-by: Alexis Hétu <sugoi@google.com>
Reviewed-by: Nicolas Capens <nicolascapens@google.com>