We auto-generate DT_COMPAT_<compat> defines so we dont need to
explicitly define them anymore.
NOTE: we need to source Kconfig.zephyr first to pull in the autogen
Kconfig.dts files.
Signed-off-by: Kumar Gala <galak@kernel.org>
Add a sample intended to show how to use I2S drivers in processing of
audio streams. The sample starts both the RX and TX streams and adds
a simple echo effect to the received audio signal.
Signed-off-by: Andrzej Głąbek <andrzej.glabek@nordicsemi.no>