net: ptp: mark filter as __initdata

sk_unattached_filter_create() will copy the filter's instructions so we
don't need to have the master copy hanging around after initialization.
Signed-off-by: Mathias Krause <minipli@googlemail.com>
Acked-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/core/ptp_classifier.c

@@ -88,7 +88,7 @@ EXPORT_SYMBOL_GPL(ptp_classify_raw);
 
 void __init ptp_classifier_init(void)
 {
-	static struct sock_filter ptp_filter[] = {
+	static struct sock_filter ptp_filter[] __initdata = {
 		{ 0x28,  0,  0, 0x0000000c },
 		{ 0x15,  0, 12, 0x00000800 },
 		{ 0x30,  0,  0, 0x00000017 },