hardware fixes (AMD K6, K6-2 and K6-III in Socket 7 boards by Iwill)

Iwill doesn't officialy provide support for K6 in old boards. But there are mainboards which can run the K6.

P55 XU (UWSCSI 1.21)
Yes !
K6-2CXT 400
(166-on, 233-on, 300-on, T75-on, RSV-on, 2.2V)