Make programmer ft245r libavrdude ready

[stefanrueger]

• Implemented PDATA programmer memory and moved all static variables there
• Utilised magic memory tree interface
• Fixed memory leaks

This one I have myself:

$ tools/test-avrdude -p"-c usb-bub-ii -pm328p"
Testing avrdude version 7.3-20240417 (8fe729f0)
Prepare "-c usb-bub-ii -pm328p" and press 'enter' or 'space' to continue. Press any other key to skip
✅   0.215 s: fuse access: clear, set and read eesave fuse bit
✅   0.087 s: fuse access: set eesave fusebit to delete EEPROM on chip erase
✅   0.341 s: chip erase
✅   6.744 s: flash -U write/verify holes_rjmp_loops_32768B.hex
✅   3.280 s: flash -T write/verify holes_rjmp_loops_32768B.hex
✅   0.237 s: eeprom check whether programmer can flip 0s to 1s
✅   1.862 s: eeprom -U write/verify holes_pack_my_box_1024B.hex
✅   3.892 s: eeprom -T write/verify holes_{the_five_boxing_wizards,pack_my_box}_1024B.hex
✅   3.539 s: chip erase and spot check flash is actually erased
✅   0.457 s: spot check eeprom is erased, too

And here the programmer definition

#------------------------------------------------------------
# usb-bub-ii
#------------------------------------------------------------

# Connect up your target as below and use avrdude -c usb-bub-ii ... voila

programmer
    id                     = "usb-bub-ii";
    desc                   = "FT232R Synchronous BitBang";
    type                   = "ftdi_syncbb";
    prog_modes             = PM_TPI | PM_ISP;
    connection_type        = usb;
    reset                  = 3;  # CTS = D3 (green)
    sck                    = 2;  # RTS = D2 (yellow)
    sdo                    = 0;  # TxD = D0 (blue)
    sdi                    = 1;  # RxD = D1 (white)
;