hw/chiptod: Add POWER10 support
hw/chiptod: Add POWER10 support

POWER10 changes to use the SCOM addressing mode, as it was found to
be more robust than the core ID addressing mode.

Signed-off-by: Nicholas Piggin <24829078df5003d9dd1dd871ca2aeb0b1cf95ef4@gmail.com>
Signed-off-by: Vasant Hegde <a6d753843573f7bfed5075c1e875b0be8007a0ab@linux.vnet.ibm.com>

qemu/skiboot,open-power/skiboot,shenki/skiboot,shenki/skiboot,legoater/skiboot,shenki/skiboot,qemu/skiboot,open-power/skiboot,qemu/skiboot,legoater/skiboot,open-power/skiboot,legoater/skiboot,legoater/skiboot,legoater/skiboot,qemu/skiboot,open-power/skiboot,shenki/skiboot,qemu/skiboot,shenki/skiboot,open-power/skiboot