Fix cscope segfault problem

Remove -q option as this option leads to a segfault on
obj/modules/testfapi2/testfapi2.C

User will see this:
/bin/sh: line 2: 10942 Segmentation fault      cscope -bqk

Change-Id: If4d6264351605e2313ce481a07f501e5cdec4fdf
Reviewed-on: http://rchgit01.rchland.ibm.com/gerrit1/67113
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Tested-by: Jenkins OP Build CI <op-jenkins+hostboot@us.ibm.com>
Reviewed-by: Daniel M. Crowell <dcrowell@us.ibm.com>

src/build/mkrules/cscope.rules.mk

@@ -5,7 +5,9 @@
 #
 # OpenPOWER HostBoot Project
 #
-# COPYRIGHT International Business Machines Corp. 2013,2014
+# Contributors Listed Below - COPYRIGHT 2013,2018
+# [+] 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.
@@ -31,7 +33,8 @@ cscope:
 	$(C2) "    CSCOPE"
 	$(C1)(cd $(ROOTPATH)/obj/cscope ; rm -f cscope.* ; \
 	      find ../../ -name '*.[CHchS]' -type f -fprint cscope.files; \
-	      cscope -bqk)
+	      cscope -bk)
+# removed -q as it caused a segfault in obj/modules/testfapi2/testfapi2.C
 
 .PHONY: ctags
 ctags: