rockchip: Add a sound driver

Add a sound driver for rk3288 supporting chromebook_jerry. This uses the
I2S driver, and existing audio codec and the clock/pinmux support.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
2 files changed