ARM: rockchip: rv1108: Add support for default distro_bootcmd

This allow easier integration of RV1108 based boards on generic
distributions and build systems.

To avoid behavior change, we make evb-rv1108 to use the existing
environment as it boots from its SPI NOR.

Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
2 files changed