[OE-core] [yocto] Support UBI u-boot

Quentin Schulz <quentin.schulz@...>

Hi JH,

On Sun, Feb 09, 2020 at 08:01:15PM +1100, JH wrote:
Changed to https://source.codeaurora.org/external/imx/uboot-imx.git
branch imx_v2018.03_4.14.98_2.0.0_ga, it can now support
CONFIG_CMD_MTDPARTS ind defconfg, all MTDPARTS error gone, but then
2018.03-r0/git/cmd/ubi.c missed dependencies of del_mtd_partitions,
add_mtd_partitions, mtd_get_device_size all in mtdpart.c which can
only be enabled by CONFIG_MTD_PARTITIONS:

obj-$(CONFIG_MTD_PARTITIONS) += mtdpart.o

But that CONFIG_MTD_PARTITIONS is not supported in defconfig.

Could anyone advise which branch works for UBI?
FYI, U-boot was still slowly migrating to Kconfig only back then (maybe
still is). There was for a long time a mix between Kconfig options and
options in what I call board header files (include/configs/<board>.h).

Most likely CONFIG_MTD_PARTITIONS had to be defined there.

Biased recommendation: https://www.youtube.com/watch?v=5E0sdYkvq-Q