[WIP] various changes to enable RB2 audio

Dirty.

RX macro
VA macro
SWR0 and SWR1
WCD codec
WSA8815 analog mode
i2c bus enabling
Machine driver
pins, pinctrl
Runtime disabling in soundwire
q6asm-dai: fix playback max period size

and etc.

Some of this code came from Srini, some from Konrad.

Signed-off-by: Alexey Klimov <alexey.klimov@linaro.org>