Currently we depend on output of 'perf record -e "sched:sched_switch"', to
check whether perf was built with libtraceevent support.

Instead, a more straightforward approach can be to check the build options,
using 'perf version --build-options', to check for libtraceevent support.

When perf is compiled WITHOUT libtraceevent ('make NO_LIBTRACEEVENT=1'),
'perf version --build-options' outputs (output trimmed):

	 ...
         libtraceevent: [ OFF ]  # HAVE_LIBTRACEEVENT
	 ...

While, when perf is compiled WITH libtraceevent,

'perf version --build-options' outputs:

...
         libtraceevent: [ on ]  # HAVE_LIBTRACEEVENT
	 ...

Committer notes:

Removed one grep in the pipleline by combining the two into just one
expression that covers the OFF + HAVE_LIBTRACEEVENT.
Suggested-by: Ian Rogers <irogers@google.com>
Signed-off-by: Aditya Gupta <adityag@linux.ibm.com>
Cc: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
Cc: Disha Goel <disgoel@linux.vnet.ibm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Madhavan Srinivasan <maddy@linux.ibm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: linuxppc-dev@lists.ozlabs.org
Link: https://lore.kernel.org/r/20230725061649.34937-1-adityag@linux.ibm.comSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>