net: dsa: make some structures const

Make these const as they are not modified anywhere.

Signed-off-by: Bhumika Goyal <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

drivers/net/dsa/bcm_sf2.c

···
 	return 0;
 }
 
-static struct b53_io_ops bcm_sf2_io_ops = {
+static const struct b53_io_ops bcm_sf2_io_ops = {
 	.read8	= bcm_sf2_core_read8,
 	.read16	= bcm_sf2_core_read16,
 	.read32	= bcm_sf2_core_read32,

drivers/net/dsa/qca8k.c

···
 
 };
 
-static struct regmap_access_table qca8k_readable_table = {
+static const struct regmap_access_table qca8k_readable_table = {
 	.yes_ranges = qca8k_readable_ranges,
 	.n_yes_ranges = ARRAY_SIZE(qca8k_readable_ranges),
 };