[U-Boot] mx6cuboxi fails to load u-boot.img

[Peter Robinson]

> > I just tested mx6cuboxi with 2019.10-rc4, and it fails to load
> > u-boot.img from MMC:
> >
> > 1 2019-09-26_17:31:27.63089 U-Boot SPL 2019.10-rc4+dfsg-1 (Sep 24 2019 -
> > 08:03:23 +0000)
> > 2 2019-09-26_17:31:27.63092 Trying to boot from MMC2
> > 3 2019-09-26_17:31:27.63095 MMC Device 1 not found
> > 4 2019-09-26_17:31:27.63097 spl: could not find mmc device 1. error: -19
> > 5 2019-09-26_17:31:27.63099 SPL: failed to boot from all boot devices
> > 6 2019-09-26_17:31:27.63101 ### ERROR ### Please RESET the board ###
>
> Thanks for reporting this issue.
>
> Unfortunately, I don't have access to my Cuboxi, so I am adding Jon
> and Baruch on Cc.

For reference I have also seen the same with the udoo-neo and I have
had reports from a Fedora user of a similar problem on the Wandboard.

Peter