Staging: sm750fb: Remove space after parenthesis

Fixed error by removing space after open parenthesis '('
Problem found using checkpatch.pl
ERROR: space prohibited after that open parenthesis '('

Signed-off-by: Amitoj Kaur Chawla <amitoj1606@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>