mISDN: Add XHFC support for embedded Speech-Design board to hfcmulti

New version without emulating arch specific stuff for the other
architectures, the special IO and init functions for the 8xx
microcontroller are in a separate include file.

Signed-off-by: Andreas Eversberg <[email protected]>
Signed-off-by: Karsten Keil <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
6 files changed