update cen_common_funcs to be its own library to fix hb's compile probs

Change-Id: Id2ce55c480ed92c2f46bca447dc2214c966e686f
Original-Change-Id: Ie2ad9f9a79a05fd66a6b6609cbec0fa45fdf6196
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/44941
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: Sakethan R. Kotta <sakkotta@in.ibm.com>
Reviewed-by: Thi N. Tran <thi@us.ibm.com>
Reviewed-by: Joseph J. McGill <jmcgill@us.ibm.com>
Reviewed-by: Prachi Gupta <pragupta@us.ibm.com>
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/45361
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: Christian R. Geddes <crgeddes@us.ibm.com>

Author: Prachi Gupta

src/import/chips/centaur/procedures/hwp/perv/cen_common_funcs.mk

@@ -0,0 +1,28 @@
+# IBM_PROLOG_BEGIN_TAG
+# This is an automatically generated prolog.
+#
+# $Source: src/import/chips/centaur/procedures/hwp/perv/cen_common_funcs.mk $
+#
+# OpenPOWER HostBoot Project
+#
+# Contributors Listed Below - COPYRIGHT 2017
+# [+] International Business Machines Corp.
+#
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+# implied. See the License for the specific language governing
+# permissions and limitations under the License.
+#
+# IBM_PROLOG_END_TAG
+-include 01common.mk
+PROCEDURE=cen_common_funcs
+$(eval $(call ADD_MEMORY_INCDIRS,$(PROCEDURE)))
+$(call BUILD_PROCEDURE)