perf evlist: Add missing xyarray.h header

It gets it very indirectly, via evsel.h -> counts.h, and since counts.h
doesn't need xyarray.h at all, add it here before we remove it there.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-hkizv6gojwfklj9ezaiiztll@git.kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/util/evlist.c

@@ -37,6 +37,8 @@
 #include <perf/evsel.h>
 #include <perf/cpumap.h>
 
+#include <internal/xyarray.h>
+
 #ifdef LACKS_SIGQUEUE_PROTOTYPE
 int sigqueue(pid_t pid, int sig, const union sigval value);
 #endif