of_device_id is always used as const.
(See driver.of_match_table and open firmware functions)
Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Mark Brown <broonie@kernel.org>
        .flags = RSND_GEN2,
 };
 
-static struct of_device_id rsnd_of_match[] = {
+static const struct of_device_id rsnd_of_match[] = {
        { .compatible = "renesas,rcar_sound-gen1", .data = &rsnd_of_data_gen1 },
        { .compatible = "renesas,rcar_sound-gen2", .data = &rsnd_of_data_gen2 },
        {},