UPSTREAM: ASoC: rockchip: i2s: change bclk and lrck according to sample rates

UPSTREAM: ASoC: rockchip: i2s: change bclk and lrck according to sample rates

This patch sets the dividers autonomously.

when i2s works on master mode, and sample rates changed. We need to change
bclk and lrck at the same time for cpu internal side.

As the input source clock to the module is MCLK_I2S,
and by the divider of the module, the clock generator generates
SCLK and LRCK to transmitter and receiver.

Change-Id: I377f0f08656659787b980785fab0b69197b7b80b
Signed-off-by: Caesar Wang <wxt@rock-chips.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
(cherry picked from commit 2458c37779ddb91b4109949d86f5a5e193ba415b)