anv/format: handle unsupported formats properly

anv/format: handle unsupported formats properly

According to the spec for vkGetPhysicalDeviceImageFormatProperties:

"If format is not a supported image format, or if the combination of format,
 type, tiling, usage, and flags is not supported for images, then
 vkGetPhysicalDeviceImageFormatProperties returns VK_ERROR_FORMAT_NOT_SUPPORTED."

Makes the following Vulkan CTS tests report 'Not Supported' instead of crashing:

dEQP-VK.api.image_clearing.clear_color_image.1d_b8g8r8_unorm
dEQP-VK.api.image_clearing.clear_color_image.1d_b8g8r8_snorm
dEQP-VK.api.image_clearing.clear_color_image.1d_b8g8r8_uscaled
dEQP-VK.api.image_clearing.clear_color_image.1d_b8g8r8_sscaled
dEQP-VK.api.image_clearing.clear_color_image.1d_b8g8r8_uint
dEQP-VK.api.image_clearing.clear_color_image.1d_b8g8r8_sint
dEQP-VK.api.image_clearing.clear_color_image.1d_b8g8r8_srgb
dEQP-VK.api.image_clearing.clear_color_image.1d_b8g8r8a8_unorm
dEQP-VK.api.image_clearing.clear_color_image.1d_b8g8r8a8_snorm
dEQP-VK.api.image_clearing.clear_color_image.1d_b8g8r8a8_uscaled
dEQP-VK.api.image_clearing.clear_color_image.1d_b8g8r8a8_sscaled
dEQP-VK.api.image_clearing.clear_color_image.1d_b8g8r8a8_uint
dEQP-VK.api.image_clearing.clear_color_image.1d_b8g8r8a8_sint
dEQP-VK.api.image_clearing.clear_color_image.1d_b8g8r8a8_srgb
dEQP-VK.api.image_clearing.clear_color_image.1d_r4g4_unorm_pack8
dEQP-VK.api.image_clearing.clear_color_image.1d_r8_srgb
dEQP-VK.api.image_clearing.clear_color_image.1d_r8g8_srgb
dEQP-VK.api.image_clearing.clear_color_image.1d_r8g8b8_srgb
dEQP-VK.api.image_clearing.clear_color_image.1d_b5g5r5a1_unorm_pack16

Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>