Document IACx/DACx registers access using ONE_REG API

Patch to access the debug registers (IACx/DACx) using ONE_REG api
was sent earlier. But that missed the respective documentation.

Also corrected the index number referencing in section 4.69
Signed-off-by: Bharat Bhushan <bharat.bhushan@freescale.com>
Signed-off-by: Alexander Graf <agraf@suse.de>

Documentation/virtual/kvm/api.txt

@@ -1734,7 +1734,12 @@ registers, find a list below:
   Arch  |       Register        | Width (bits)
         |                       |
   PPC   | KVM_REG_PPC_HIOR      | 64
-
+  PPC   | KVM_REG_PPC_IAC1      | 64
+  PPC   | KVM_REG_PPC_IAC2      | 64
+  PPC   | KVM_REG_PPC_IAC3      | 64
+  PPC   | KVM_REG_PPC_IAC4      | 64
+  PPC   | KVM_REG_PPC_DAC1      | 64
+  PPC   | KVM_REG_PPC_DAC2      | 64
 
 4.69 KVM_GET_ONE_REG
 
@@ -1750,7 +1755,7 @@ kvm_one_reg struct passed in. On success, the register value can be found
 at the memory location pointed to by "addr".
 
 The list of registers accessible using this interface is identical to the
-list in 4.64.
+list in 4.68.
 
 
 4.70 KVM_KVMCLOCK_CTRL