When non-TLV targets are used, the WMI event table is not populated.
So, it shouldn't be treated as fatal and WMI event register/unregister
functions can return NOSUPPORT instead of FAILURE.
Handle this value in TWT code.
Change-Id: I5bc8e7aae2e572c84ea0333c967cff527d5cbcc3
CRs-Fixed: 3145077
Include relevant header for MAX_SESSIONS and use
the correct build flag to retrieve session params.
CRs-Fixed: 3136148
Change-Id: I28ef98a67cbe479c5d8be93c49f9ae6ce63ba982
