perf test data_type_profiling.sh: Skip just the Rust tests if code_with_type workload is missing

Namhyung suggested skipping only the rust tests when the code_with_type
'perf test' workload is not built into perf, do it so that we can
continue to test the C based workloads:

With rust:

  root@number:/# perf test -vv "data type"
   83: perf data type profiling tests:
  --- start ---
  test child forked, pid 2645245
  Basic Rust perf annotate test
  Basic annotate test [Success]
  Pipe Rust perf annotate test
  Pipe annotate test [Success]
  Basic C perf annotate test
  Basic annotate test [Success]
  Pipe C perf annotate test
  Pipe annotate test [Success]
  ---- end(0) ----
   83: perf data type profiling tests                                  : Ok
  root@number:/#

Without:

  root@number:/# perf test "data type"
   83: perf data type profiling tests                                  : Ok
  root@number:/# perf test -vv "data type"
   83: perf data type profiling tests:
  --- start ---
  test child forked, pid 2634759
  Basic Rust perf annotate test
  Skip: code_with_type workload not built in 'perf test'
  Pipe Rust perf annotate test
  Skip: code_with_type workload not built in 'perf test'
  Basic C perf annotate test
  Basic annotate test [Success]
  Pipe C perf annotate test
  Pipe annotate test [Success]
  ---- end(0) ----
   83: perf data type profiling tests                                  : Ok
  root@number:/#

Suggested-by: Namhyung Kim <namhyung@kernel.org>
Cc: Dmitrii Dolgov <9erthalion6@gmail.com>
Cc: Miguel Ojeda <ojeda@kernel.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

Author: acmel

tools/perf/tests/shell/data_type_profiling.sh

@@ -4,11 +4,6 @@
 
 set -e
 
-if ! perf test --list-workloads | grep -qw code_with_type ; then
-	echo "Skip: code_with_type workload not built in 'perf test'"
-	exit 2
-fi
-
 # The logic below follows the same line as the annotate test, but looks for a
 # data type profiling manifestation
 
@@ -42,6 +37,11 @@ test_basic_annotate() {
 
   case "x${runtime}" in
     "xRust")
+    if ! perf check feature -q rust
+    then
+      echo "Skip: code_with_type workload not built in 'perf test'"
+      return
+    fi
     index=0 ;;
 
     "xC")