Generic 8250 serial diagnostics.

[David Vrabel]

Convert the IXP4xx HAL to use the generic 8250 serial diagnostics.

David Vrabel
-- 
David Vrabel, Design Engineer

Arcom, Clifton Road           Tel: +44 (0)1223 411200 ext. 3233
Cambridge CB1 7EA, UK         Web: http://www.arcom.com/
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