Fix to compile without secureboot config option

Change-Id: I6fca0b735447087317228c567b7762b397db87e5
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/35949
Reviewed-by: Christopher J. Engel <cjengel@us.ibm.com>
Reviewed-by: Michael Baiocchi <mbaiocch@us.ibm.com>
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Tested-by: FSP CI Jenkins <fsp-CI-jenkins+hostboot@us.ibm.com>
Tested-by: Jenkins OP Build CI <op-jenkins+hostboot@us.ibm.com>
Reviewed-by: William G. Hoffa <wghoffa@us.ibm.com>

src/usr/secureboot/base/service.C

@@ -92,10 +92,12 @@ void* initializeBase(void* unused)
     return l_errl;
 }
 
+#if defined(CONFIG_SECUREBOOT) && !defined(__HOSTBOOT_RUNTIME)
 bool enabled()
 {
     return Singleton<Settings>::instance().getEnabled();
 }
+#endif
 
 errlHndl_t getSecuritySwitch(uint64_t& o_regValue, TARGETING::Target* i_targ)
 {