drm/xe/migrate: Use the correct mocs value for the XY_FAST_COLOR_BLT command

The value was previously programmed as zero. Use the uc mocs index that corresponds to what the bspec recommends.

Also add a small utility that converts a mocs index to the format expected by blit commands to better describe what the code does.

v2:

• Fix missing include.

Signed-off-by: Thomas Hellström thomas.hellstrom@linux.intel.com