QCA I2S2 platform module

Required properties:
- compatible : "qca,ipq40xx-pcm-i2s2"
- reg : Physical base address and length of the device's registers.

Example:

i2s2platform: qca-pcm-i2s2@770d000 {
	compatible = "qca,ipq40xx-pcm-i2s1";
	reg = <0x770d000 0x1000>;
};
