ASoC: rockchip: spdif: Move DT compatible table

ASoC: rockchip: spdif: Move DT compatible table

Move rk_spdif_match DT compatible table to the usual place before the
platform-driver struct definition and drop the useless of_match_ptr(),
since it is fine to reference the DT id table even when OF support is
disabled (which makes the driver useless anyways).

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Link: https://patch.msgid.link/20260203-rockchip-spdif-cleanup-and-bsp-sync-v2-2-4412016cf577@collabora.com
Signed-off-by: Mark Brown <broonie@kernel.org>