Amiga: Fix NTSC GAYLE clocks
Merge branch 'master' of ssh://mess.org/mame
Amiga: Implement internal IDE controller for the Amiga 4000. Fix RTC
hookup in Amiga 3000 and 4000. Set RP5C01 RTC to actually return 24 hour
mode, which fixes RTC detection for the Amiga.
Corrections on docs and PCB layout...