tests: Skip the stat syscall on aarch64 in test 06

The recent patch to remove PNR syscalls from the BPF
filter causes test 06-sim-actions%%005-00001 to fail
because aarch64 doesn't support the stat syscall.  This
commit skips that check on aarch64 only.

Signed-off-by: Tom Hromatka <tom.hromatka@oracle.com>

tests/06-sim-actions.tests

@@ -12,7 +12,7 @@ test type: bpf-sim
 06-sim-actions	all		write		1		0x856B008	N	N	N	N	ERRNO(1)
 06-sim-actions	all		close		4		N		N	N	N	N	TRAP
 06-sim-actions	all,-aarch64	open		0x856B008	4		N	N	N	N	TRACE(1234)
-06-sim-actions	all		stat		N		N		N	N	N	N	KILL_PROCESS
+06-sim-actions	all,-aarch64	stat		N		N		N	N	N	N	KILL_PROCESS
 06-sim-actions	all		rt_sigreturn	N		N		N	N	N	N	LOG
 06-sim-actions	x86		0-2		N		N		N	N	N	N	KILL
 06-sim-actions	x86		7-105		N		N		N	N	N	N	KILL