panvk: support binding swapchain memory
This is required by VK_KHR_swapchain, so let's support it.
Fixes a crash in this CTS test-case: dEQP-VK.wsi.wayland.swapchain.simulate_oom.image_swapchain_create_info
Fixes: d970fe2e ("panfrost: Add a Vulkan driver for Midgard/Bifrost GPUs")