perf tools: Change fields type in perf_record_time_conv

C standard claims "An object declared as type _Bool is large enough to
store the values 0 and 1", bool type size can be 1 byte or larger than
1 byte.  Thus it's uncertian for bool type size with different
compilers.

This patch changes the bool type in structure perf_record_time_conv to
__u8 type, and pads extra bytes for 8-byte alignment; this can give
reliable structure size.

Fixes: d110162c ("perf tsc: Support cap_user_time_short for event TIME_CONV")
Suggested-by: NAdrian Hunter <adrian.hunter@intel.com>
Signed-off-by: NLeo Yan <leo.yan@linaro.org>
Acked-by: NAdrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Gustavo A. R. Silva <gustavoars@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steve MacLean <Steve.MacLean@Microsoft.com>
Cc: Yonatan Goldschmidt <yonatan.goldschmidt@granulate.io>
Link: https://lore.kernel.org/r/20210428120915.7123-2-leo.yan@linaro.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>

tools/lib/perf/include/perf/event.h

@@ -346,8 +346,9 @@ struct perf_record_time_conv {
 	__u64			 time_zero;
 	__u64			 time_cycles;
 	__u64			 time_mask;
-	bool			 cap_user_time_zero;
-	bool			 cap_user_time_short;
+	__u8			 cap_user_time_zero;
+	__u8			 cap_user_time_short;
+	__u8			 reserved[6];	/* For alignment */
 };
 
 struct perf_record_header_feature {