vulkan: Fix vulkan.api for Ian's changes & regen

Various problems: uint32_t vs u32, a dropped }, function body with
semantics that crash the generator, etc ...

V2: don't export Ian's extensions from libvulkan.

Change-Id: I1dceb4d4fc21ad5d38255c4979d9ef372ea2a28b
Test: build
6 files changed