arm64: dts: imx8mm-beacon-som: Add QSPI NOR flash support

imx8mm-beacon-som has a Quad-SPI NOR flash connected to the FlexSPI bus.

This patch enables the FlexSPI bus and configures it to work with the
flash part.

Signed-off-by: Adam Ford <aford173@gmail.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
1 file changed