Submodule
This MR introduces the lpgbt-fpga submodule in the SL project, from which it takes all the lpgbt-fpga related files, which have been therefore removed from the SL FPGA firmware project.
This MR introduces the lpgbt-fpga submodule in the SL project, from which it takes all the lpgbt-fpga related files, which have been therefore removed from the SL FPGA firmware project.