Add fix for SD-ATA44 activity LED

[tehKaiN]

some SD-ATA44 adapters wrongly produce activity signal, therefore it's not working even on A600/A1200 ATA controllers. There's a fix floating around involving soldering a transistor into adapter, but there was also a project of angled IDE adapter with single 74xx chip which fixed this signal.

• Do a research how to fix it, preferably on expansion's side
• Do a fix

[tehKaiN]

Krashan fixed activity LED using dual inversion of activity signal. Schematic is here. Thanks for info!

This means replacing LS04 with HCT14 and a bit of additional routing. As an added bonus I'll convert all 74xx chips to HCT family.