[Libre-soc-dev] PLL integration

[Luke Kenneth Casson Leighton]

Jean-Paul i've added a set of TODO notes:
https://git.libre-soc.org/?p=soclayout.git;a=commitdiff;h=0e83dd816fda283f4b2cc1533253891310552789

unmodified it *may* work well, you will have to check.

if you commit what you have for soclayout9/tsmc_018 i can replicate it in
soclayout/freepdk_c45 then do some "stuff" and check it for you.  then when
working commit it back in tsmc_018

l.