SQUASH: Revert downstream wm8804 changes

The format change from S24_LE to S24_3LE effectively disables 24-bit
mode as S24_3LE isn't supported by bcm2835-i2s. This causes issues
with drivers that want to use wm8804 in 24-bit mode.

Adding the S32_LE format is also incorrect, according to the datasheet
only 16-24 bit formats are supported.

Signed-off-by: Matthias Reichl <hias@horus.com>