staging: crystalhd: Resolve sparse 'different base types' warnings.

The result from crystalhd_get_sgle_paddr and crystalhd_get_sgle_len are later
used in calculations, so the result should be in CPU byte ordering.

Signed-off-by: Shaun Laing <shaun@xresource.ca>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>