bhyve nvme: Update v1.4 Identify Controller data

Compliant v1.4 Controllers must report a Controller Type (CNTRLTYPE).
Also, do not advertise secure erase functionality in the Format NVM
Attributes field of the Identify Controller data structure as the
Controller does not implement secure erase.

Fixes UNH ILO Test 1.1, Case 2

Reviewed by: imp, allanjude
Tested by: jason@tubnor.net
MFC after: 1 month
Differential Revision: https://reviews.freebsd.org/D33573