ASoC: img: Add driver for SPDIF output controller

Add driver for Imagination Technologies SPDIF output
controller
Signed-off-by: Damien.Horsley <Damien.Horsley@imgtec.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/img/Kconfig

@@ -34,3 +34,11 @@ config SND_SOC_IMG_SPDIF_IN
 	help
 	  Say Y or M if you want to add support for SPDIF input driver for
 	  Imagination Technologies SPDIF input device.
+
+config SND_SOC_IMG_SPDIF_OUT
+	tristate "Imagination SPDIF Output Device Driver"
+	depends on SND_SOC_IMG
+	select SND_SOC_GENERIC_DMAENGINE_PCM
+	help
+	  Say Y or M if you want to add support for SPDIF out driver for
+	  Imagination Technologies SPDIF out device.

sound/soc/img/Makefile

@@ -2,3 +2,4 @@ obj-$(CONFIG_SND_SOC_IMG_I2S_IN) += img-i2s-in.o
 obj-$(CONFIG_SND_SOC_IMG_I2S_OUT) += img-i2s-out.o
 obj-$(CONFIG_SND_SOC_IMG_PARALLEL_OUT) += img-parallel-out.o
 obj-$(CONFIG_SND_SOC_IMG_SPDIF_IN) += img-spdif-in.o
+obj-$(CONFIG_SND_SOC_IMG_SPDIF_OUT) += img-spdif-out.o