anv: Fixes struct anv_device::info is not initialized with struct anv_physical_device

anv: Fixes struct anv_device::info is not initialized with struct anv_physical_device

Refactoring the function anv_device_set_physical out, so that it's can be called in unittests

Fixes: 356a60bd6c5 ("anv: Do not duplicate intel_device_info memory in each logical device")
Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/7092

Signed-off-by: Yonggang Luo <luoyonggang@gmail.com>
Reviewed-by: José Roberto de Souza jose.souza@intel.com
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/17928>