Enable HMI tests on P9.
Enable HMI tests on P9.

This patch enables the HMI tests on P9 Processor by adding respective
FIR and Timer Facility registers to form the scom addresses across all
cores. And also modified for taking care of disabling all supported CPU idle
states for both P8 and P9 programmatically instead of hard coding it.

Tested this on both P8 and P9 systems.

Signed-off-by: Pridhiviraj Paidipeddi <fd8ea14509c256cbd04eaa4ee745a213945e70a1@linux.vnet.ibm.com>
Signed-off-by: Stewart Smith <ec31ab75ddf977353c8f660f92ea8b23f64aef25@linux.vnet.ibm.com>

open-power/op-test-framework,open-power/op-test-framework,open-power/op-test-framework