KVM: PPC: Book3S: Add count cache flush parameters to kvmppc_get_cpu_char()

KVM: PPC: Book3S: Add count cache flush parameters to kvmppc_get_cpu_char()

Add KVM_PPC_CPU_CHAR_BCCTR_FLUSH_ASSIST &
KVM_PPC_CPU_BEHAV_FLUSH_COUNT_CACHE to the characteristics returned
from the H_GET_CPU_CHARACTERISTICS H-CALL, as queried from either the
hypervisor or the device tree.

BugLink: https://bugs.launchpad.net/bugs/1822870
Signed-off-by: Suraj Jitindar Singh <sjitindarsingh@gmail.com>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
(cherry picked from commit 2b57ecd0208f7ac0b20b1b171698f027481a39f6)
Signed-off-by: Manoj Iyer <manoj.iyer@canonical.com>
Acked-by: Stefan Bader <stefan.bader@canonical.com>
Acked-by: Kleber Sacilotto de Souza <kleber.souza@canonical.com>
Signed-off-by: Kleber Sacilotto de Souza <kleber.souza@canonical.com>