fix: mvebu_ comphy: Update COMPHY sequence number

Use local static counter for maintaining the COMPHY chip-ID
upon its initialization.
The dev->seq originally used as the COMPHY chip-ID depends
on the device tree scan order and produces wrong results
that breaks the deficated PHYs init flow, which in turn
breaks the USB support.

Change-Id: I4e3f7ec36590a7f95dc94d9269a3c47fb708c4a9
Signed-off-by: Konstantin Porotchkin <kostap@marvell.com>
Cc: Stefan Roese <sr@denx.de>
Cc: Igal Liberman <igall@marvell.com>
Cc: Stefan Chulski <stefanc@marvell.com>
Cc: Nadav Haklai <nadavh@marvell.com>
Reviewed-by: Stefan Roese <sr@denx.de>

drivers/phy/marvell/comphy_core.c

@@ -113,6 +113,7 @@ static int comphy_probe(struct udevice *dev)
 	int subnode;
 	int lane;
 	int last_idx = 0;
+	static int current_idx;
 
 	/* Save base addresses for later use */
 	chip_cfg->comphy_base_addr = (void *)dev_get_addr_index(dev, 0);
@@ -175,7 +176,7 @@ static int comphy_probe(struct udevice *dev)
 	}
 
 	/* Save comphy index for MultiCP devices (A8K) */
-	chip_cfg->comphy_index = dev->seq;
+	chip_cfg->comphy_index = current_idx++;
 	/* PHY power UP sequence */
 	chip_cfg->ptr_comphy_chip_init(chip_cfg, comphy_map_data);
 	/* PHY print SerDes status */