staging: sm750fb: fix style for if clause

Fix for checkpatch.pl complaints:
ERROR: that open brace { should be on the previous line
CHECK: spaces preferred around that '+' (ctx:VxV)

Signed-off-by: Othmar Pasteka <pasteka@kabsi.at>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>