Fix two remaining issues with the arm UFS mount issue:

• Add the GEOM_PART_GPT option and enable MSDOSFS in the GUMSTIX kernel. [1]

• Add GEOM_LABEL to the PANDABOARD kernel, that should have been included included in r285132. I confused the kernel configuration used for the WANDBOARD and PANDABOARD, which the former uses the IMX6 kernel configuration, along with the CUBOX-HUMMINGBOARD.

This is a direct commit to stable/10, as was r285132.

[1] I do not actually have the GUMSTIX board, but I suspect it will

fail to boot in the same way as the others have been.

Approved by: re (kib)
Sponsored by: The FreeBSD Foundation