eMMC /dev/mmcsd1 doesn't exist on BBB FreeBSD 11

[fabiodive]

Hello all!

I installed FreeBSD 11 using crochet and u-boot-from ports,
I also patched the u-boot 2014-01 to allow 1GHz cpu clock.
Everything is running fine, the only problem I have is the
missing eMMC device /dev/mmcsd1, I can't copy the system
from the sdcard to the integrated flash.  The new u-boot I used
could be the cause of the issue. 
Does anyone have any idea? 
Thank you

f.