Disables broadcast mode in memdiags::continue_cmd

Broadcast mode at runtime can cause issues.
memdiags::continue_cmd is called at runtime,
so disabling the broadcast mode check will
fix an NVDIMM runtime bug.

Change-Id: Ib13ad0bf46c44aa26a6df39ffabc507348a1a14e
CQ:SW480744
Reviewed-on: http://rchgit01.rchland.ibm.com/gerrit1/86898
Reviewed-by: Mark Pizzutillo <mark.pizzutillo@ibm.com>
Tested-by: FSP CI Jenkins <fsp-CI-jenkins+hostboot@us.ibm.com>
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Tested-by: Hostboot CI <hostboot-ci+hostboot@us.ibm.com>
Reviewed-by: Louis Stermole <stermole@us.ibm.com>
Reviewed-by: Zane C Shelley <zshelle@us.ibm.com>
Reviewed-by: Caleb N Palmer <cnpalmer@us.ibm.com>
Reviewed-by: Jennifer A Stofer <stofer@us.ibm.com>
Reviewed-on: http://rchgit01.rchland.ibm.com/gerrit1/86912
Reviewed-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Reviewed-by: Daniel M Crowell <dcrowell@us.ibm.com>
Tested-by: Daniel M Crowell <dcrowell@us.ibm.com>

src/import/generic/memory/lib/utils/mcbist/gen_mss_memdiags.H

@@ -1103,8 +1103,12 @@ fapi2::ReturnCode continue_cmd( const fapi2::Target<T>& i_target,
         // Read-modify-write the fields in the program.
         FAPI_TRY( mss::getScom(i_target, TT::MCBAGRAQ_REG, l_program.iv_addr_gen) );
 
-        // Configure broadcast mode if needed
-        FAPI_TRY(mss::mcbist::configure_broadcast_mode(i_target, l_program));
+        // Note: we are specifically not configuring broadcast mode here
+        // The continue command is called by PRD exclusively at mainline
+        // If we're at mainline, we can't run in broadcast mode
+        // If we ever need to call continue elsewhere, we'll need to do the following
+        // 1) add the function to configure broadcast mode
+        // 2) add in a switch to disable broadcast mode if we're at runtime
 
         l_program.change_end_boundary(i_end);