drm/xe/xe2: Handle flat ccs move for igfx.

- Clear flat ccs during user bo creation.
- copy ccs meta data between flat ccs and bo during eviction and
restore.
- Add a bool field ccs_cleared in bo, true means ccs region of bo is
already cleared.

v2:
 - Rebase.

v3:
 - Maintain order of xe_bo_move_notify for ttm_bo_type_sg.

v4:
 - xe_migrate_copy can be used to copy src to dst bo on igfx too.
Add a bool which handles only ccs metadata copy.

v5:
- on dgfx ccs should be cleared even if the bo is not compression enabled.

Cc: Thomas Hellström <[email protected]>
Signed-off-by: Himal Prasad Ghimiray <[email protected]>
Reviewed-by: Thomas Hellström <[email protected]>
Signed-off-by: Rodrigo Vivi <[email protected]>

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