vulkan: Update Vulkan headers to 1.0.22

Meaningful changes to platform code:
* VKAPI_ATTR is now defined properly when building for 32-bit ARMv8a.
* The pData parameter to vkCmdUpdateBuffer changed from uint32_t* to
  void*. Alignment is still required to be four bytes (by spec), and
  the size parameter was always supposed to be bytes, not words.

Bug: 29460769
Change-Id: I224c53cb08427bea1b0e8ac74802c2f1eed10496