The memory block passed by the user to the i2s_write function is
tightly packed next to each other.
However for 8-bit word_size the I2S hardware expects the data
to be in 2bytes which does not match what is passed by the user.
This will be addressed in a separate PR once the zephyr API committee
finalizes on an I2S API for the user to probe hardware variations.
Signed-off-by: Mahesh Mahadevan <mahesh.mahadevan@nxp.com>
478822f74c