ASoC: add rt5663 codec driver

RT5663/RT5668 audio CODEC

This device supports I2C only.

Required properties:

- compatible : One of "realtek,rt5663" or "realtek,rt5668".

- reg : The I2C address of the device.

- interrupts : The CODEC's interrupt output.

Optional properties:

Pins on the device (for linking into audio routes) for RT5663/RT5668:

  * IN1P

  * IN1N

  * IN2P

  * IN2N

  * HPOL

  * HPOR

Example:

codec: rt5663@12 {

	compatible = "realtek,rt5663";

	reg = <0x12>;

	interrupts = <7 IRQ_TYPE_EDGE_FALLING>;

};

	select SND_SOC_RT5645 if I2C

	select SND_SOC_RT5651 if I2C

	select SND_SOC_RT5659 if I2C

	select SND_SOC_RT5663 if I2C

	select SND_SOC_RT5670 if I2C

	select SND_SOC_RT5677 if I2C && SPI_MASTER

	select SND_SOC_SGTL5000 if I2C

	default y if SND_SOC_RT5645=y

	default y if SND_SOC_RT5651=y

	default y if SND_SOC_RT5659=y

	default y if SND_SOC_RT5663=y

	default y if SND_SOC_RT5670=y

	default y if SND_SOC_RT5677=y

	default m if SND_SOC_RT5514=m

	default m if SND_SOC_RT5645=m

	default m if SND_SOC_RT5651=m

	default m if SND_SOC_RT5659=m

	default m if SND_SOC_RT5663=m

	default m if SND_SOC_RT5670=m

	default m if SND_SOC_RT5677=m

config SND_SOC_RT286

	tristate

	select SND_SOC_RT5663

	depends on I2C

config SND_SOC_RT298

config SND_SOC_RT5659

	tristate

config SND_SOC_RT5663

	tristate

config SND_SOC_RT5670

	tristate

snd-soc-rt5645-objs := rt5645.o

snd-soc-rt5651-objs := rt5651.o

snd-soc-rt5659-objs := rt5659.o

snd-soc-rt5663-objs := rt5663.o

snd-soc-rt5670-objs := rt5670.o

snd-soc-rt5677-objs := rt5677.o

snd-soc-rt5677-spi-objs := rt5677-spi.o

obj-$(CONFIG_SND_SOC_RT5645)	+= snd-soc-rt5645.o

obj-$(CONFIG_SND_SOC_RT5651)	+= snd-soc-rt5651.o

obj-$(CONFIG_SND_SOC_RT5659)	+= snd-soc-rt5659.o

obj-$(CONFIG_SND_SOC_RT5663)	+= snd-soc-rt5663.o

obj-$(CONFIG_SND_SOC_RT5670)	+= snd-soc-rt5670.o

obj-$(CONFIG_SND_SOC_RT5677)	+= snd-soc-rt5677.o

obj-$(CONFIG_SND_SOC_RT5677_SPI)	+= snd-soc-rt5677-spi.o