perf tools: Separate lbfd check out of NO_DEMANGLE condition

We fail build with NO_DEMANGLE with missing -lbfd externals error.
The reason is that we now use bfd code in srcline object:
  perf tools: Implement addr2line directly using libbfd

So we need to check/add -lbfd always now.

Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/config/Makefile

@@ -470,16 +470,18 @@ else
   endif
 endif
 
+ifeq ($(feature-libbfd), 1)
+  EXTLIBS += -lbfd
+endif
+
 ifdef NO_DEMANGLE
   CFLAGS += -DNO_DEMANGLE
 else
   ifdef HAVE_CPLUS_DEMANGLE_SUPPORT
     EXTLIBS += -liberty
     CFLAGS += -DHAVE_CPLUS_DEMANGLE_SUPPORT
   else
-    ifeq ($(feature-libbfd), 1)
-      EXTLIBS += -lbfd
-    else
+    ifneq ($(feature-libbfd), 1)
       $(feature_check,liberty)
       ifeq ($(feature-liberty), 1)
         EXTLIBS += -lbfd -liberty
@@ -502,6 +504,10 @@ else
   endif
 endif
 
+ifneq ($(filter -lbfd,$(EXTLIBS)),)
+  CFLAGS += -DHAVE_LIBBFD_SUPPORT
+endif
+
 ifndef NO_ON_EXIT
   ifeq ($(feature-on-exit), 1)
     CFLAGS += -DHAVE_ON_EXIT_SUPPORT
@@ -524,10 +530,6 @@ ifndef NO_LIBNUMA
   endif
 endif
 
-ifndef ($(filter -lbfd,$(EXTLIBS)),)
-  CFLAGS += -DHAVE_LIBBFD_SUPPORT
-endif
-
 # Among the variables below, these:
 #   perfexecdir
 #   template_dir