The commit is part of the effort in unifying softpll with
wr-switch-sw, and later remove the duplicated code there.
The files added by these commit are going to be built when configuring
wrpc-sw to build wr-switch rt_cpu (which is, basically, the softpll
code alone, with mini-rpc with the host and the basic glue code). The
files are copied with the original name with two exceptions:
wr-switch-sw::rt/main.c becomes wrpc-sw::wrs_main.c
wr-switch-sw::rt/arch/lm32/ram.ld becomes wrpc-sw::arch/lm32/ram-wrs.ld
The files are copied from commit FIXME of wr-switch-sw.
This commit has no technical effect, as the files are not built for wrpc-sw.
Signed-off-by: Alessandro Rubini <email@example.com>