media: i2c: ov7740: drop of_match_ptr for ID table

The driver will match mostly by DT table (even thought there is regular
ID table) so there is little benefit in of_match_ptr (this also allows
ACPI matching via PRP0001, even though it might not be relevant here).
This also fixes !CONFIG_OF error:

  drivers/media/i2c/ov7740.c:1203:34: error: ‘ov7740_of_match’ defined but not used [-Werror=unused-const-variable=]
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

drivers/media/i2c/ov7740.c

@@ -1210,7 +1210,7 @@ static struct i2c_driver ov7740_i2c_driver = {
 	.driver = {
 		.name = "ov7740",
 		.pm = &ov7740_pm_ops,
-		.of_match_table = of_match_ptr(ov7740_of_match),
+		.of_match_table = ov7740_of_match,
 	},
 	.probe    = ov7740_probe,
 	.remove   = ov7740_remove,