The roam reason and roam sub-reason code sent and expected
reason codes at supplicant are diffent which results in
wrong interpretation of reason code.
Add roam reason and roam sub-reason code enum in order
to aid the converion from fw roam reason code to supplicant
understandable reason code.
Change-Id: I3432793965e325ddbf90ab90a1532a0726650d8c
CRs-Fixed: 3238496