v3dv: expose VK_EXT_image_drm_format_modifier

v3dv: expose VK_EXT_image_drm_format_modifier

This has been implemented for a while but we could not expose it on
Vulkan 1.0 because the extension declares a dependency on
VK_KHR_sampler_ycbcr_conversion, which we don't implement, and
CTS would complain.

On Vulkan 1.1 however, VK_KHR_sampler_ycbcr_conversion was promoted
to core as an optional feature, and this is enough for the the
dependency to be satisfied, even if the feature is not supported,
meaning that we can now expose the extension.

Reviewed-by: Alejandro Piñeiro <apinheiro@igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/15426>