Fix generation of set_sbe_error.H by removing redundant target

  <sbeTarget>MASTER_CHIP</sbeTarget> in the xml will generate code
  equivalent to <ffdc>MASTER_CHIP</ffdc> in header files. Having
  both causes two variables named MASTER_CHIP to be created in
  set_sbe_error.H

Change-Id: I3547e6cef53dc98e9ce5e621b3ba425496736c58
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/41177
Dev-Ready: Brent Wieman <bwieman@us.ibm.com>
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Tested-by: PPE CI <ppe-ci+hostboot@us.ibm.com>
Reviewed-by: Brent Wieman <bwieman@us.ibm.com>
Reviewed-by: Joachim Fenkes <fenkes@de.ibm.com>
Reviewed-by: Jennifer A. Stofer <stofer@us.ibm.com>
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/41235
Reviewed-by: Hostboot Team <hostboot@us.ibm.com>
Tested-by: FSP CI Jenkins <fsp-CI-jenkins+hostboot@us.ibm.com>
Reviewed-by: Sachin Gupta <sgupta2m@in.ibm.com>

src/import/chips/p9/procedures/xml/error_info/p9_sbe_tp_switch_gears_errors.xml

@@ -48,7 +48,6 @@
            <target>MASTER_CHIP</target>
            <targetType>TARGET_TYPE_PROC_CHIP</targetType>
       </collectRegisterFfdc>
-      <ffdc>MASTER_CHIP</ffdc>
       <ffdc>STATUS_REGISTER_B</ffdc>
       <ffdc>LOOP_COUNT</ffdc>
       <ffdc>BACKUP_SEEPROM_ATTR</ffdc>
@@ -92,7 +91,6 @@
            <target>MASTER_CHIP</target>
            <targetType>TARGET_TYPE_PROC_CHIP</targetType>
       </collectRegisterFfdc>
-      <ffdc>MASTER_CHIP</ffdc>
       <ffdc>DATA0TO7_REGISTER_B</ffdc>
       <ffdc>MAGIC_NUMBER_VALUE</ffdc>
       <ffdc>BACKUP_SEEPROM_ATTR</ffdc>