staging: sm750fb: add space after return type
staging: sm750fb: add space after return type

Fixes checkpatch.pl warning:
WARNING: missing space after return type

Signed-off-by: Juston Li <3cde8054ca8fda8bb50965d2c0f3e9a0759797c5@gmail.com>
Signed-off-by: Greg Kroah-Hartman <4645f7897fd33786a2ee1264d590b3c400559d85@linuxfoundation.org>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs