perf tools: Fix tab vs spaces issue in Makefile ifdef/endif

Unmatched spaces/tabs Makefile indentation could make the
Makefile fails. While the tabed line could be considered
sometimes as follow up for rule command, the mixed space
tab meses up with makefile if conditions.

Signed-off-by: Jiri Olsa <[e-mail]>
Cc: Borislav Petkov <[e-mail]>
Cc: Corey Ashford <[e-mail]>
Cc: David Ahern <[e-mail]>
Cc: Frederic Weisbecker <[e-mail]>
Cc: Ingo Molnar <[e-mail]>
Cc: Namhyung Kim <[e-mail]>
Cc: Paul Mackerras <[e-mail]>
Cc: Peter Zijlstra <[e-mail]>
Cc: Sam Ravnborg <[e-mail]>
Cc: Stephane Eranian <[e-mail]>
Link: http://lkml.kernel.org/r/[e-mail]
Signed-off-by: Arnaldo Carvalho de Melo <[e-mail]>

tools/perf/Makefile

···
 
 # Treat warnings as errors unless directed not to
 ifneq ($(WERROR),0)
-	CFLAGS_WERROR := -Werror
+  CFLAGS_WERROR := -Werror
 endif
 
 ifeq ("$(origin DEBUG)", "command line")
···
 ifdef NO_DEMANGLE
 	BASIC_CFLAGS += -DNO_DEMANGLE
 else
-        ifdef HAVE_CPLUS_DEMANGLE
+	ifdef HAVE_CPLUS_DEMANGLE
 		EXTLIBS += -liberty
 		BASIC_CFLAGS += -DHAVE_CPLUS_DEMANGLE
-        else
+	else
 		FLAGS_BFD=$(ALL_CFLAGS) $(ALL_LDFLAGS) $(EXTLIBS) -DPACKAGE='perf' -lbfd
 		has_bfd := $(call try-cc,$(SOURCE_BFD),$(FLAGS_BFD),libbfd)
 		ifeq ($(has_bfd),y)