Committing pc051d_puma_cpld Cadence schematic symbol

Before pushing local changes back to ohwr

- Put back in over temp shutdown
- Register data in I2C and SPI busses with 10MHz clock 
- Put back power on/off by HDMI

Checking in files after generating artwork for power filter. Some files to check in after desparate struggle to produce artwork for main board

Ran constraints manager from HDL capture. Didn't resolve DRC issue. Eventually fixed. Looks like I have a Physical Constraint set and an Electrical constraint set with the same name. One with tighter constraints was over-ruling the other. However, error message reported the limit from the non-failing one. Starting layout of production artwork. Components placed. Connections made. Dangling lines/vias fixed. Need to produce silk