bindexplib: Exclude entry and exit thunks for arm64EC
Remove entry and exit thunks symbols when generating def files for arm64EC
objs.
Backport: release
Topic-rename: bindexplib-arm64ec
Edited by Brad King
Remove entry and exit thunks symbols when generating def files for arm64EC
objs.
Backport: release
Topic-rename: bindexplib-arm64ec