staging: sm750fb: use 'struct sm750_dev *' instead of 'void *'

Use proper 'struct sm750_dev *' type instead of 'void *'

Signed-off-by: Mike Rapoport <mike.rapoport@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
1 file changed