phnt: ntzwapi.h breaks builds with `PHNT_VERSION` prior to Red Stone 2

[oberrich]

Building phnt with PHNT_VERSION set to anything prior to RS2 is currently broken due to conditional compilation hiding type definitions required for certain function prototypes inside ntzwapi.h (auto-generated).

Specifically type definitions under ntexapi.h:1213 as well as ntseapi.h:638 are causing issues for me. Pulling these outside of the #if seems to resolve the issue.