qemu: Fix comment for 'qemuValidateDevicePCISlotsChipsets'

Commit id '177db487' renamed 'qemuValidateDevicePCISlotsChipsets' to
'qemuDomainValidateDevicePCISlotsChipsets', but didn't adjust comment.
Signed-off-by: NFarhan Ali <alifm@linux.vnet.ibm.com>
Reviewed-by: NBoris Fiuczynski <fiuczy@linux.vnet.ibm.com>
Reviewed-by: NJohn Ferlan <jferlan@redhat.com>

src/qemu/qemu_domain_address.c

@@ -1815,7 +1815,7 @@ qemuDomainValidateDevicePCISlotsChipsets(virDomainDefPtr def,
  *  - Video (slot 2)
  *
  *  - These integrated devices were already added by
- *    qemuValidateDevicePCISlotsChipsets invoked right before this function
+ *    qemuDomainValidateDevicePCISlotsChipsets invoked right before this function
  *
  * Incrementally assign slots from 3 onwards:
  *