This commit introduces CONFIG_MIPS_APPENDED_RAW_DTB as an alternative to
OWRTDTB. Both solutions can be used concurrently until all board
configurations have been changed.
Signed-off-by: Tobias Wolf <github-NTEO@vplace.de>
[Jo-Philipp Wich: rewrap commit message]
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
