staging: ks7010: fix checkpatch "space after #ifdef" error

Fix checkpatch "ERROR: exactly one space required after that #ifdef"
error in ks_hostif.c.

Signed-off-by: Philipp Hoefflin <p.hoefflin@posteo.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>