This also drops the share create_surface_state helper and moves filling
out SURFACE_STATE directly into anv_image_view_init() and
anv_color_attachment_view_init().
The *_init functions work basically the same as the Vulkan entrypoints
except that they act on an already-created view and take an optional
command buffer option. If a command buffer is given, the surface state is
allocated out of the command buffer's state stream.
We don't need to point back to the memory object the bo came from.
Pointing directly to a bo lets us bind images and buffers to other
bos - like our allocator bos.
