ASoC: jz4740-i2s: Remove Open Firmware dependency

This driver doesn't require Open Firmware support. Remove the
OF-specific includes and drop the Kconfig dependency.
Signed-off-by: Aidan MacDonald <aidanmacdonald.0x0@gmail.com>
Acked-by: Paul Cercueil <paul@crapouillou.net>
Link: https://lore.kernel.org/r/20220706211330.120198-2-aidanmacdonald.0x0@gmail.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/jz4740/Kconfig

@@ -2,7 +2,7 @@
 config SND_JZ4740_SOC_I2S
 	tristate "SoC Audio (I2S protocol) for Ingenic JZ4740 SoC"
 	depends on MIPS || COMPILE_TEST
-	depends on OF && HAS_IOMEM
+	depends on HAS_IOMEM
 	select SND_SOC_GENERIC_DMAENGINE_PCM
 	help
 	  Say Y if you want to use I2S protocol and I2S codec on Ingenic JZ4740

sound/soc/jz4740/jz4740-i2s.c

@@ -5,10 +5,9 @@
 
 #include <linux/init.h>
 #include <linux/io.h>
-#include <linux/of.h>
-#include <linux/of_device.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
+#include <linux/mod_devicetable.h>
 #include <linux/platform_device.h>
 #include <linux/slab.h>