ASoC: sirf: Add SiRF audio port driver is used by SiRF internal audio codec

* SiRF SoC audio port

Required properties:

- compatible: "sirf,audio-port"

- reg: Base address and size entries:

- dmas: List of DMA controller phandle and DMA request line ordered pairs.

- dma-names: Identifier string for each DMA request line in the dmas property.

  These strings correspond 1:1 with the ordered pairs in dmas.

  One of the DMA channels will be responsible for transmission (should be

  named "tx") and one for reception (should be named "rx").

Example:

audioport: audioport@b0040000 {

	compatible = "sirf,audio-port";

	reg = <0xb0040000 0x10000>;

	dmas = <&dmac1 3>, <&dmac1 8>;

	dma-names = "rx", "tx";

};

source "sound/soc/samsung/Kconfig"

source "sound/soc/s6000/Kconfig"

source "sound/soc/sh/Kconfig"

source "sound/soc/sirf/Kconfig"

source "sound/soc/spear/Kconfig"

source "sound/soc/tegra/Kconfig"

source "sound/soc/txx9/Kconfig"

obj-$(CONFIG_SND_SOC)	+= samsung/

obj-$(CONFIG_SND_SOC)	+= s6000/

obj-$(CONFIG_SND_SOC)	+= sh/

obj-$(CONFIG_SND_SOC)	+= sirf/

obj-$(CONFIG_SND_SOC)	+= spear/

obj-$(CONFIG_SND_SOC)	+= tegra/

obj-$(CONFIG_SND_SOC)	+= txx9/

config SND_SOC_SIRF

	tristate "SoC Audio for the SiRF SoC chips"

	depends on ARCH_SIRF || COMPILE_TEST

	select SND_SOC_GENERIC_DMAENGINE_PCM

config SND_SOC_SIRF_AUDIO_PORT

	select REGMAP_MMIO

	tristate

snd-soc-sirf-audio-port-objs := sirf-audio-port.o

obj-$(CONFIG_SND_SOC_SIRF_AUDIO_PORT) += snd-soc-sirf-audio-port.o