net: phy: marvell: constify marvell_hw_stats

The list of stat registers is read-only, so we can declare it as const.

Signed-off-by: Matthias Schiffer <[e-mail]>
Reviewed-by: Andrew Lunn <[e-mail]>
Link: https://lore.kernel.org/r/24d7a2f39[e-mail]
Signed-off-by: Jakub Kicinski <[e-mail]>

drivers/net/phy/marvell.c

···
 	u8 bits;
 };
 
-static struct marvell_hw_stat marvell_hw_stats[] = {
+static const struct marvell_hw_stat marvell_hw_stats[] = {
 	{ "phy_receive_errors_copper", 0, 21, 16},
 	{ "phy_idle_errors", 0, 10, 8 },
 	{ "phy_receive_errors_fiber", 1, 21, 16},