[U-Boot] Issues with bbone with 2016.05rc3

[Peter Robinson]

Hi All,

Not sure if this has been addressed since RC3 but thought I'd
highlight it just in case. I've not had time to test 2016.05 as much
as I'd like so playing a bit of catch up here.

I'm seeing two different errors:

On a BBBlack booting off the emmc (2Gb variety) I see:

U-Boot SPL 2016.05-rc3 (Apr 28 2016 - 10:53:41)
Trying to boot from MMC2
Card did not respond to voltage select!
*** Warning - MMC init failed, using default environment

On a BBGreen booting from a mSD card I see:

U-Boot SPL 2016.05-rc3 (Apr 28 2016 - 10:53:41)
Trying to boot from MMC1
Card doesn't support part_switch
MMC partition switch failed
*** Warning - MMC partition switch failed, using default environment

Not sure if they're related. Built with gcc6 if that matters, or at
least for reference.

Peter