video: ssd1307fb: Drop OF dependency

After the commit 72915994 ("video: ssd1307fb: Make use of device
properties") driver does not depend on OF, drop unneeded dependency.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20210409164140.17337-1-andriy.shevchenko@linux.intel.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>