ASoC: rockchip: Fix unused rockchip_i2s_tdm_match warning for !CONFIG_OF

Commit 9958d85968ed ("ASoC: Use device_get_match_data()") dropped the
unconditional use of rockchip_i2s_tdm_match resulting in this warning:

sound/soc/rockchip/rockchip_i2s_tdm.c:1315:34: warning: 'rockchip_i2s_tdm_match' defined but not used [-Wunused-const-variable=]

The fix is to drop of_match_ptr() which is not necessary because DT is
always used for this driver.

Fixes: 9958d85968ed ("ASoC: Use device_get_match_data()")
Reported-by: kernel test robot <[e-mail]>
Closes: https://lore.kernel.org/oe-kbuild-all/[e-mail]/
Signed-off-by: Rob Herring <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Mark Brown <[e-mail]>

sound/soc/rockchip/rockchip_i2s_tdm.c

···
 	.remove_new = rockchip_i2s_tdm_remove,
 	.driver = {
 		.name = DRV_NAME,
-		.of_match_table = of_match_ptr(rockchip_i2s_tdm_match),
+		.of_match_table = rockchip_i2s_tdm_match,
 		.pm = &rockchip_i2s_tdm_pm_ops,
 	},
 };