bhyve: validate NVMe deallocate range values

For NVMe emulation, validate the Data Set Management LBA ranges do not
exceed the capacity of the backing storage. If they do, return an "LBA
Out of Range" error.

Fixes UNH Test 2.2.3

Tested by: Jason Tubnor
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D24893