phy: phy-mtk-dp: make array driving_params static const

Don't populate the read-only array driving_params on the stack but instead
make it static const. Also makes the object code a little smaller.

Signed-off-by: Colin Ian King <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Vinod Koul <[e-mail]>

drivers/phy/mediatek/phy-mtk-dp.c

···
 static int mtk_dp_phy_init(struct phy *phy)
 {
 	struct mtk_dp_phy *dp_phy = phy_get_drvdata(phy);
-	u32 driving_params[] = {
+	static const u32 driving_params[] = {
 		DRIVING_PARAM_3_DEFAULT,
 		DRIVING_PARAM_4_DEFAULT,
 		DRIVING_PARAM_5_DEFAULT,