refactor(drivers/marvell/comphy-3700): rename PHY_GEN_USB3_5G to PHY_GEN_MAX_USB3_5G

The register name for the value PHY_GEN_USB3_5G is PHY_GEN_MAX. We
already define the mask constant as PHY_GEN_MAX_MASK. Thus also the
value name should be prefixed with PHY_GEN_MAX_.

Signed-off-by: Marek Behún <marek.behun@nic.cz>
Change-Id: Ibf72a66d2e65e240ed2cdbc3a301dbd793e2cb34
diff --git a/drivers/marvell/comphy/phy-comphy-3700.c b/drivers/marvell/comphy/phy-comphy-3700.c
index 1fdb484..60791d4 100644
--- a/drivers/marvell/comphy/phy-comphy-3700.c
+++ b/drivers/marvell/comphy/phy-comphy-3700.c
@@ -764,7 +764,7 @@
 	/*
 	 * 14. Set max speed generation to USB3.0 5Gbps
 	 */
-	usb3_reg_set(reg_base, COMPHY_SYNC_MASK_GEN_REG, PHY_GEN_USB3_5G,
+	usb3_reg_set(reg_base, COMPHY_SYNC_MASK_GEN_REG, PHY_GEN_MAX_USB3_5G,
 		     PHY_GEN_MAX_MASK);
 
 	/*