Add hwp retry loop as workaround until we resolve timeout issue

We were seeing check_for_ready timeout intermittently in driver
tests. In locally built driver we saw that if we retried the hwp
a few times we eventually passed. Incrementing the timeout value
in the HWP itself did not seem to make the problem go away. We will
remove this retry loop when we figure out the root of the problem.

Change-Id: If39965268349891fc9170a5a29193aaf6fb8d583
Reviewed-on: http://rchgit01.rchland.ibm.com/gerrit1/89780
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Tested-by: Jenkins OP Build CI <op-jenkins+hostboot@us.ibm.com>
Tested-by: Jenkins OP HW <op-hw-jenkins+hostboot@us.ibm.com>
Reviewed-by: Matt Derksen <mderkse1@us.ibm.com>
Tested-by: FSP CI Jenkins <fsp-CI-jenkins+hostboot@us.ibm.com>
Reviewed-by: Yun Pan <yun.pan@ibm.com>
Reviewed-by: Daniel M Crowell <dcrowell@us.ibm.com>

src/usr/isteps/istep10/call_proc_cen_ref_clk_enable.C

@@ -5,7 +5,7 @@
 /*                                                                        */
 /* OpenPOWER HostBoot Project                                             */
 /*                                                                        */
-/* Contributors Listed Below - COPYRIGHT 2015,2019                        */
+/* Contributors Listed Below - COPYRIGHT 2015,2020                        */
 /* [+] International Business Machines Corp.                              */
 /*                                                                        */
 /*                                                                        */
@@ -1063,9 +1063,25 @@ void* call_proc_cen_ref_clk_enable(void *io_pArgs )
                         "for 0x%.08X", TARGETING::get_huid(l_ocmb));
 
             fapi2::Target <fapi2::TARGET_TYPE_OCMB_CHIP> l_fapi_ocmb_target(l_ocmb);
-            FAPI_INVOKE_HWP(l_errl,
-                            exp_check_for_ready,
-                            l_fapi_ocmb_target);
+
+            // TODO CQ:SW482291 Remove this retry workaround when ocmb check_for_ready timeout issue is resolved
+            for(uint8_t i = 0; i < 10; i++)
+            {
+                FAPI_INVOKE_HWP(l_errl,
+                                exp_check_for_ready,
+                                l_fapi_ocmb_target);
+
+                // Preserve the error log if this is the last loop.
+                if(l_errl == NULL || i == 9)
+                {
+                    break;
+                }
+                else
+                {
+                    delete l_errl;
+                    l_errl = NULL;
+                }
+            }
 
             if (l_errl)
             {