selftests/bpf: Fix spelling mistake "unpriviledged" -> "unprivileged"

There are a couple of spelling mistakes, one in a literal string and one
in a comment. Fix them.

Signed-off-by: Colin Ian King <[e-mail]>
Signed-off-by: Andrii Nakryiko <[e-mail]>
Acked-by: John Fastabend <[e-mail]>
Link: https://lore.kernel.org/bpf/[e-mail]

tools/testing/selftests/bpf/verifier/calls.c

···
 	.result = ACCEPT,
 },
 {
-	"calls: not on unpriviledged",
+	"calls: not on unprivileged",
 	.insns = {
 	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 2),
 	BPF_MOV64_IMM(BPF_REG_0, 1),

tools/testing/selftests/bpf/verifier/var_off.c

···
 	BPF_EXIT_INSN(),
 	},
 	.fixup_map_hash_8b = { 1 },
-	/* The unpriviledged case is not too interesting; variable
+	/* The unprivileged case is not too interesting; variable
 	 * stack access is rejected.
 	 */
 	.errstr_unpriv = "R2 variable stack access prohibited for !root",