graphics: add support for "single buffering"

When we don't have enough video memory for double buffering we
fallback to "single buffering".

Change-Id: I8bfab6d8cd6b54f0cc6c67edc41a4c37d8fbd4ba
Signed-off-by: Octavian Purdila <octavian.purdila@intel.com>
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
1 file changed