[pinmux] Tracker for various modifications and updates for Silver

[msfschaffner]

This is a feature tracker for all the pinmux improvements and updates that need to go in for Silver.
For a more detailed overview, see also:

• Pinmux Update Slides
• Pinmux Programming Model

High Prio Tasks (for Silver):

• Consolidate pinmux and padctrl, PR [pinmux/padctrl] First round of (mostly CSR facing) pinmux updates #5128
• Update sleep behavior, add sleep status bits, PR [pinmux/padctrl] First round of (mostly CSR facing) pinmux updates #5128
• Update wakeup detector connections and configuration, PR [pinmux/padctrl] First round of (mostly CSR facing) pinmux updates #5128
• Add fine grained CSR lock bits for all multiregs, PR [pinmux/padctrl] First round of (mostly CSR facing) pinmux updates #5128
• Add HW strap sampling support [pinmux] Add strap sampling and TAP qualification logic #5301
• Add DFT TAP hooks [pinmux] Add strap sampling and TAP qualification logic #5301
• implement JTAG mux ([pinmux/tops] Move JTAG mux logic into pinmux strap logic #5486)
• Figure out how to keep the legacy JTAG muxing function for FPGA tops ([pinmux/tops] Move JTAG mux logic into pinmux strap logic #5486)
• Rework Hjson datastructure and the associated parts in topgen and the templates ([top/pinout/pinmux] Giant overhaul #5793)
• Make padring more parametric such that topgen can propagate the pad configuration from the Hjson down into RTL (either via parameters or a template) ([top/pinout/pinmux] Giant overhaul #5793)
• General refactoring of padring and ASIC top-levels, try to share code and make these top-levels more uniform ([top/pinout/pinmux] Giant overhaul #5793)
• Bronze-pinout alignments ([top/pinout] Update from Bronze to Silver pinout status #5933)
• Add hierarchy for physical instances to padring, connect power sequencing signals ([top/pinout/pinmux] Giant overhaul #5793, [padring] Add placeholder module for physical pads #6017)
• Add scanrole parameters ([padring] Scan role parameters #6024)
• Rework WARL behavior of pad attribute CSR (this needs topgen tooling support since the pad type will be defined in then top-level hjson) ([top/pinout/pinmux] Giant overhaul #5793)
• Remove some pinmux TODOs, update strap sampling behavior and use RMA instead of the DEV LC state in simulation and emulation such that all DFT and test logic is ungated ([pinmux] Remove some TODOs #6025)
• Update SDC constraints ([top/pinout/pinmux] Giant overhaul #5793)

Related issues: #892, #307, #381, #295

[msfschaffner]

CC: @GregAC @silvestrst @tjaychen @vogelpi @dsandrs @mateenfaisal

[msfschaffner]

I've split out the remaining low-prio tasks as separate issues, such that we can close this one down.