perf test: Skip test_arm_callgraph_fp.sh if unwinding isn't built in

Even though this is a frame pointer unwind test, it's testing that a
frame pointer stack can be augmented correctly with a partial
Dwarf unwind. So add a feature check so that this test skips instead of
fails if Dwarf unwinding isn't present.
Signed-off-by: James Clark <james.clark@arm.com>
Reviewed-by: Ian Rogers <irogers@google.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Spoorthy S <spoorts2@in.ibm.com>
Cc: Kajol Jain <kjain@linux.ibm.com>
Link: https://lore.kernel.org/r/20240123163903.350306-3-james.clark@arm.comSigned-off-by: Namhyung Kim <namhyung@kernel.org>

tools/perf/tests/shell/test_arm_callgraph_fp.sh

@@ -8,6 +8,12 @@ shelldir=$(dirname "$0")
 
 lscpu | grep -q "aarch64" || exit 2
 
+if perf version --build-options | grep HAVE_DWARF_UNWIND_SUPPORT | grep -q OFF
+then
+  echo "Skipping, no dwarf unwind support"
+  exit 2
+fi
+
 skip_test_missing_symbol leafloop
 
 PERF_DATA=$(mktemp /tmp/__perf_test.perf.data.XXXXX)