staging/xgifb: rewrite XGIfb_get_cmap_len

We don't need to use this switch-case here for a simple two case
if-else.

Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
1 file changed