Input: da7280 - protect OF match table with CONFIG_OF

The OF match table is only used when OF is enabled.

Fixes: cd3f609823a5 ("Input: new da7280 haptic driver")
Reported-by: kernel test robot <[e-mail]>
Acked-by: Roy Im <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Dmitry Torokhov <[e-mail]>

drivers/input/misc/da7280.c

···
 	return retval;
 }
 
+#ifdef CONFIG_OF
 static const struct of_device_id da7280_of_match[] = {
 	{ .compatible = "dlg,da7280", },
 	{ }
 };
 MODULE_DEVICE_TABLE(of, da7280_of_match);
+#endif
 
 static const struct i2c_device_id da7280_i2c_id[] = {
 	{ "da7280", },