kms_cursor_crc: Add reference software rendering
kms_cursor_crc: Add reference software rendering

This patch first render the cursor with hardware rendering and
then with software, acquiring the CRC in both cases so they can be
properly compared. Say goodbye to crc_must_match variable.

Signed-off-by: Antti Koskipaa <7a56f34651dc9afb7a41d71fc3e3a28b59e34272@linux.intel.com>

rib/intel-gpu-tools,chenxianqin/intel-gpu-tools,dlespiau/checkmate-test-igt,erikarn/intel-gpu-tools,tiagovignatti/intel-gpu-tools,rib/intel-gpu-tools,mv0/intel-gpu-tools,mv0/intel-gpu-tools,tiagovignatti/intel-gpu-tools,rib/intel-gpu-tools,mv0/intel-gpu-tools,rib/intel-gpu-tools,tiagovignatti/intel-gpu-tools,tiagovignatti/intel-gpu-tools,erikarn/intel-gpu-tools,erikarn/intel-gpu-tools,yipdw/intel-gpu-tools,yipdw/intel-gpu-tools,erikarn/intel-gpu-tools,mv0/intel-gpu-tools,chenxianqin/intel-gpu-tools,yipdw/intel-gpu-tools,chenxianqin/intel-gpu-tools,yipdw/intel-gpu-tools,chenxianqin/intel-gpu-tools,dlespiau/checkmate-test-igt,dlespiau/checkmate-test-igt,dlespiau/checkmate-test-igt