gallium/format: move two vertex formats into the proper place.
These two can be vertex formats with vulkan so lavapipe can expose them.
Fixes dEQP-VK.pipeline.vertex_input.single_attribute.uvec4.as_a2r10g10b10_uint_pack32_rate_vertex
Fixes: e002f5a0 ("gallium: change pipe_vertex_element::src_format to uint8_t")
Closes #5394 (closed)