misc: xilinx-sdfec: Update config from hardware

misc: xilinx-sdfec: Update config from hardware

Updates the config from sdfec hardware registers for order, bypass,
interrupt configuration and if the device has been started. These
values can be set in the hardware design when the PL initializes the
device and after a sdfec has been reset.
The updated configuration includes a Code Write Protect value which
replaces wr_protect usage.

Signed-off-by: Derek Kiernan <derek.kiernan@xilinx.com>
Signed-off-by: Mauro DeLuca <mauro.de-luca@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>