vulkan: Adjust ANDROID_native_buffer to match new shared image naming

Rename the SWAPCHAIN_IMAGE_USAGE_FRONT_BUFFER_BIT to
SWAPCHAIN_IMAGE_USAGE_SHARED_BIT, to match Khronos renames.

Change-Id: I380512a66221c8cfcc650cd7e8259a185d61604d
Test: build
5 files changed