platform/x86: amd-pmc: Check s0i3 cycle status

As the PM firmware returns the status of the last s0i3 in the smu_metrics
structure, the existing name "s0i3_cyclecount" seems to be a misnomer.
Change it accordingly to "s0i3_last_entry_status".

Signed-off-by: Sanket Goswami <Sanket.Goswami@amd.com>
Acked-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Link: https://lore.kernel.org/r/20210916124130.2581-1-Sanket.Goswami@amd.com


Signed-off-by: Hans de Goede <hdegoede@redhat.com>