Vulkan: Fix DebugReportCallback definition
Vulkan: Fix DebugReportCallback definition

Fixes 32bit Android build

BUG=angleproject:2314

Change-Id: I55e8fc8ee3ffa6397e6612ccf43c67e4a7a9dc75
Reviewed-on: https://chromium-review.googlesource.com/885504
Reviewed-by: Yuly Novikov <36f5580f63d0a3eacc17e89a61d11e2f646630d2@chromium.org>
Commit-Queue: Yuly Novikov <36f5580f63d0a3eacc17e89a61d11e2f646630d2@chromium.org>

ppy/angle,ppy/angle,ppy/angle,ppy/angle