kms_universal_plane: Add gen9-specific test
kms_universal_plane: Add gen9-specific test

Gen9 adds some new capabilities not present on previous platforms
(primary plane windowing, 90/270 rotation, etc.).  Add a new subtest to
check how these new features interact with the use of the universal
plane API.

For now we just check whether pageflips work as expected in a windowed
setting.  We may want to add some rotation testing in future patches.

Signed-off-by: Matt Roper <f1605a76cb9f6387d99228a0a9260318379b62de@intel.com>
Signed-off-by: Thomas Wood <b9025d6a953b68f894a0f6a80fd2af6d55b0badd@intel.com>

mv0/intel-gpu-tools,chenxianqin/intel-gpu-tools,tiagovignatti/intel-gpu-tools,mv0/intel-gpu-tools,chenxianqin/intel-gpu-tools,chenxianqin/intel-gpu-tools,tiagovignatti/intel-gpu-tools,tiagovignatti/intel-gpu-tools,tiagovignatti/intel-gpu-tools,chenxianqin/intel-gpu-tools,mv0/intel-gpu-tools,mv0/intel-gpu-tools