spidev: Add Silicon Labs EM3581 device compatible
Add compatible string for Silicon Labs EM3581 device.
Signed-off-by: Vincent Tremblay <vincent@vtremblay.dev>
Link: https://lore.kernel.org/r/20221227023550.569547-2-vincent@vtremblay.dev
Signed-off-by: Mark Brown <broonie@kernel.org>
authored by