Add optional "mask" argument to the SoCFPGA bridge command, to select which bridges should be enabled/disabled. This allows the user to avoid enabling bridges which are not connected into the FPGA fabric. Default behavior is to enable/disable all bridges. Signed-off-by: Marek Vasut <marex@denx.de> Cc: Chin Liang See <chin.liang.see@intel.com> Cc: Dinh Nguyen <dinguyen@kernel.org> Cc: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com> Cc: Tien Fong Chee <tien.fong.chee@intel.com>