mISDN: Add ISDN_P_TE_UP0 / ISDN_P_NT_UP0

- new layer1 protocols for UP0 bus
- helper #defines to test for TE/NT/S0/E1/UP0

Signed-off-by: Martin Bachem <m.bachem@gmx.de>
Signed-off-by: Karsten Keil <kkeil@suse.de>
1 file changed