Fix incorrect buffer type in some protected memory tests

Fix incorrect buffer type in some protected memory tests

Certain Vulkan tests, such as
dEQP-VK.protected_memory.buffer.fill.<type>_buffer.*, create a BufferView with
a format that is always set to VK_FORMAT_R32G32B32A32_UINT, independently of
the actual test type (float_buffer, integer_buffer, unsigned_buffer). Reading
floats from an integer BufferView may return incorrect values on some
implementations.

This patch propagates a VkFormat parameter so that each test can create a
BufferView with the appropriate format.

Components: Vulkan

Affects:
 - dEQP-VK.protected_memory.buffer.copy.*
 - dEQP-VK.protected_memory.buffer.fill.*
 - dEQP-VK.protected_memory.buffer.update.*

VK-GL-CTS Issue: 2551

Change-Id: I1e79ae2761a028025148c3a63775a0d464278285