staging: sm750: fix whitespaces around pointers

This patch fixes checkpatch.pl errors:
- ERROR: "foo * bar" should be "foo *bar"
- ERROR: "foo* bar" should be "foo *bar"

Signed-off-by: Michel von Czettritz <michel.von.czettritz@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>