sysutils/uefi-edk2-bhyve: update to be same as uefi-edk2-bhyve-devel

Update sysutils/uefi-edk2-bhyve to be the same as the -devel port, and
delete the -devel port.

Also fix some issues in the Makefile.

Reviewed by: mat, araujo
Approved by: araujo
Differential Revision: https://reviews.freebsd.org/D23476