platform/x86: ISST: Shorten the assignments for power_domain_info

Instead of long lines for assignment to tpmi_sst->power_domain_info, use
a local variable pd_info and assign later. Also move the assignment
of number of resources after the assignment of pd_info.

No functional change is expected.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20240423204619.3946901-7-srinivas.pandruvada@linux.intel.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>