spi: dt-bindings: add binding doc for spi-mtk-snfi

Add device-tree binding documentation for Mediatek SPI-NAND Flash
Interface.

Signed-off-by: Chuanhong Guo <gch981213@gmail.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20220424032527.673605-5-gch981213@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Chuanhong Guo 2022-04-24 11:25:26 +08:00 • committed by Mark Brown
commit 69bb9b29bf
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