Instead of cluttering up a header file with a bunch of defines,
move the default environmental variables to a file called
imx8mn_beacon.env and reference it from the defconfigs.
Signed-off-by: Adam Ford <aford173@gmail.com>
The imx8mn-beacon SOM has a QSPI part on it connected to the
FlexSPI controller. Add a defconfig option which supports
booting from the QSPI NOR flash instead of sd/mmc.
Signed-off-by: Adam Ford <aford173@gmail.com>
