perf tools: Pass full path of FEATURES_DUMP

When building with an external FEATURES_DUMP, bpf complains
that features dump file is not found. Fix it by passing full file path.

Signed-off-by: David Carrillo-Cisneros <[email protected]>
Acked-by: Jiri Olsa <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Paul Turner <[email protected]>
Cc: Stephane Eranian <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>

Author: David Carrillo-Cisneros

tools/perf/Makefile.perf

@@ -240,7 +240,7 @@ endif
 ifeq ($(FEATURES_DUMP),)
 FEATURE_DUMP_EXPORT := $(realpath $(OUTPUT)FEATURE-DUMP)
 else
-FEATURE_DUMP_EXPORT := $(FEATURES_DUMP)
+FEATURE_DUMP_EXPORT := $(realpath $(FEATURES_DUMP))
 endif
 
 export prefix bindir sharedir sysconfdir DESTDIR