The SIM.ONE has a MMC card connected to the SPI host. This card
usually hosts an EXT4 root file system. Enable these options in
the defconfig so the default ompiled kernel will work
out-of-the-box.
Reviewed-by: H Hartley Sweeten <hsweeten@visionengravers.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>