anv: Fix limits when VK_EXT_descriptor_indexing is used

anv: Fix limits when VK_EXT_descriptor_indexing is used

Update various limits in
VkPhysicalDeviceDescriptorIndexingPropertiesEXT that were previously
zero to their values from VkPhysicalDeviceLimits.  When using
VK_EXT_descriptor_indexing, the former limits will apply to all the
descriptor layout sets -- not only those using the new feature bits.

For the reference, VK_EXT_descriptor_indexing says

    "There are new descriptor set layout and descriptor pool creation
    flags that are required to opt in to the update-after-bind
    functionality, and there are separate maxPerStage* and
    maxDescriptorSet* limits that apply to these descriptor set
    layouts which may be much higher than the pre-existing limits. The
    old limits only count descriptors in non-updateAfterBind
    descriptor set layouts, and the new limits count descriptors in
    all descriptor set layouts in the pipeline layout."

Fixes: 6e230d7607f "anv: Implement VK_EXT_descriptor_indexing"
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>