Add a minimal device tree for the PolarFire SoC based Sundance
PolarBerry.
Reviewed-by: NHeiko Stuebner <heiko@sntech.de>
Signed-off-by: NConor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20220509142610.128590-9-conor.dooley@microchip.comSigned-off-by: NPalmer Dabbelt <palmer@rivosinc.com>