chip: Add more P9 accessors for converting to/from PIR
chip: Add more P9 accessors for converting to/from PIR

To access a local CPU number within a chip essentially, will be
used by XIVE

Signed-off-by: Benjamin Herrenschmidt <a7089bb6e7e92505d88aaff006cbdd60cc9120b6@kernel.crashing.org>
Acked-by: Michael Neuling <7b0ab45a730e48a69239010b5b8fe5fa4e8eaac6@neuling.org>
Signed-off-by: Stewart Smith <ec31ab75ddf977353c8f660f92ea8b23f64aef25@linux.vnet.ibm.com>

mikey/skiboot,open-power/skiboot,qemu/skiboot,shenki/skiboot,qemu/skiboot,open-power/skiboot,legoater/skiboot,shenki/skiboot,qemu/skiboot,legoater/skiboot,stewart-ibm/skiboot,mikey/skiboot,mikey/skiboot,qemu/skiboot,qemu/skiboot,legoater/skiboot,legoater/skiboot,open-power/skiboot,shenki/skiboot,legoater/skiboot,open-power/skiboot,stewart-ibm/skiboot,open-power/skiboot,stewart-ibm/skiboot,shenki/skiboot,shenki/skiboot