Name
read_zsreg — 
     Read a register from a Z85230
 
Synopsis
| u8 read_zsreg ( | struct z8530_channel * c, | 
|  | u8 reg ); | 
 
Arguments
- c
- 
     Z8530 channel to read from (2 per chip)
     
- reg
- 
     Register to read
     
FIXME
   Use a spinlock.
   
   Most of the Z8530 registers are indexed off the control registers.
   A read is done by writing to the control register and reading the
   register back.  The caller must hold the lock