VK_KHR_maintenance2: View block-compressed formats

VK_KHR_maintenance2: View block-compressed formats

Add tests:
 * dEQP-VK.image.texel_view_compatible.compute.image_load.*
 * dEQP-VK.image.texel_view_compatible.compute.texel_fetch.*
 * dEQP-VK.image.texel_view_compatible.compute.texture.*
 * dEQP-VK.image.texel_view_compatible.compute.image_store.*
 * dEQP-VK.image.texel_view_compatible.graphic.attachment_read.*
 * dEQP-VK.image.texel_view_compatible.graphic.attachment_write.*
 * dEQP-VK.image.texel_view_compatible.graphic.texture_read.*
 * dEQP-VK.image.texel_view_compatible.graphic.texture_write.*

Components: Vulkan

VK-GL-CTS issue: 124

Change-Id: I8f12778e764144198dab603dbef72257faed0503