vulkan: Use image row pitch (#2077)

When importing a Vulkan external image, query and
pass OpenCL a row pitch if OpenCL is assuming linear for the imported
external handle type. Additionally fix a bug where OpenCL is being told
to create mipmapped images at all times.

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Co-authored-by: dcrawley <dcrawley@qti.qualcomm.com>

test_conformance/common/vulkan_wrapper/vulkan_wrapper.hpp

@@ -552,6 +552,7 @@ public:
         VulkanSharingMode sharingMode = VULKAN_SHARING_MODE_EXCLUSIVE);
     virtual ~VulkanImage2D();
     virtual VulkanExtent3D getExtent3D(uint32_t mipLevel = 0) const;
+    virtual VkSubresourceLayout getSubresourceLayout() const;
 
     VulkanImage2D(const VulkanImage2D &image2D);
 };