perf parse-events: Make YYDEBUG dependent on doing a debug build

YYDEBUG enables line numbers and other error helpers in the generated
parse-events-bison.c. These shouldn't be generated when debugging
isn't enabled.

Signed-off-by: Ian Rogers <[e-mail]>
Acked-by: Namhyung Kim <[e-mail]>
Cc: Adrian Hunter <[e-mail]>
Cc: Alexander Shishkin <[e-mail]>
Cc: Gaosheng Cui <[e-mail]>
Cc: Ingo Molnar <[e-mail]>
Cc: James Clark <[e-mail]>
Cc: Jiri Olsa <[e-mail]>
Cc: Kan Liang <[e-mail]>
Cc: Mark Rutland <[e-mail]>
Cc: Peter Zijlstra <[e-mail]>
Cc: Rob Herring <[e-mail]>
Cc: [e-mail]
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Arnaldo Carvalho de Melo <[e-mail]>

tools/perf/util/parse-events.y

···
 
 %{
 
+#ifndef NDEBUG
 #define YYDEBUG 1
+#endif
 
 #include <errno.h>
 #include <linux/compiler.h>