p9_tod_init: Update spread spectrum synchronization for Axone

Axone has two spread PLLs that can individually synchronized, so the
TOD timer facility grew two enable bits. Set both of them to
synchronize both PLLs at the same time. The enable bits are don't
care on Nimbus/Cumulus so the procedure will still work the same
way there.

Check only the status of one PLL, knowing that if both are enabled,
either both or none will get started by the TOD. This maintains
Nimbus/Cumulus compatibility on the checking part.

Change-Id: I1a84f4531f4eba62903c118711fc6bc84af28fbb
Reviewed-on: http://rchgit01.rchland.ibm.com/gerrit1/67952
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Tested-by: HWSV CI <hwsv-ci+hostboot@us.ibm.com>
Tested-by: Hostboot CI <hostboot-ci+hostboot@us.ibm.com>
Reviewed-by: Soma Bhanutej <soma.bhanu@in.ibm.com>
Reviewed-by: Joseph J. McGill <jmcgill@us.ibm.com>
Reviewed-by: Jennifer A. Stofer <stofer@us.ibm.com>
Reviewed-on: http://rchgit01.rchland.ibm.com/gerrit1/67957
Tested-by: Jenkins OP Build CI <op-jenkins+hostboot@us.ibm.com>
Tested-by: Jenkins OP HW <op-hw-jenkins+hostboot@us.ibm.com>
Tested-by: FSP CI Jenkins <fsp-CI-jenkins+hostboot@us.ibm.com>
Reviewed-by: Christian R. Geddes <crgeddes@us.ibm.com>

src/import/chips/p9/procedures/hwp/nest/p9_tod_init.C

@@ -171,8 +171,8 @@ fapi2::ReturnCode sync_spread(
                             l_tod_value_data),
              "Error reading TOD_VALUE_REG");
 
-    l_tod_timer_data = (l_tod_value_data + (C_SSCG_START_DELAY << 4)) &
-                       0xFFFFFFFFFFFFFFF0ULL;
+    l_tod_timer_data = ((l_tod_value_data + (C_SSCG_START_DELAY << 4)) &
+                        0xFFFFFFFFFFFFFFF0ULL) | 0xC;
 
     // Write value > tod_value to TOD Timer Register
     for (auto l_chip : l_targets)