Consolidate bridge properties in a single file, instead of duplicating
the same optional property over and over again.
Acked-by: NAlan Tull <atull@kernel.org>
Acked-by: NMichal Simek <michal.simek@xilinx.com>
Reviewed-by: NRob Herring <robh@kernel.org>
Signed-off-by: NMoritz Fischer <mdf@kernel.org>