Add AHardwareBuffer external memory test for format/usage flags.
Added tests:
dEQP-VK.api.external.memory.android_hardware_buffer.image_formats.r8g8b8a8_unorm
dEQP-VK.api.external.memory.android_hardware_buffer.image_formats.r5g6b5_unorm_pack16
dEQP-VK.api.external.memory.android_hardware_buffer.image_formats.r16g16b16a16_sfloat
dEQP-VK.api.external.memory.android_hardware_buffer.image_formats.a2b10g10r10_unorm_pack32
Components: Vulkan
VK-GL-CTS issue: 738
Change-Id: I59726b742aee3a74a98615745bb6da1bfdf46c0b