drm/xe: allow unaligned start and size xe_res_cursor parameters

xe_res_cursor code does not depend on the alignment. On the other side
unaligned accesses are useful from pread/pwrite point of view.

Signed-off-by: Andrzej Hajda <andrzej.hajda@intel.com>
Reviewed-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240418-xe_res_cursor-no-align-v1-1-8df7834266c9@intel.com


Signed-off-by: Nirmoy Das <nirmoy.das@intel.com>