armv8: ls2080a: Add serdes2 protocol 0x51 support

Signed-off-by: Santan Kumar <santan.kumar@nxp.com>
Signed-off-by: Priyanka Jain <priyanka.jain@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>

arch/arm/cpu/armv8/fsl-layerscape/ls2080a_serdes.c

@@ -70,6 +70,7 @@ static struct serdes_config serdes2_cfg_tbl[] = {
 		SATA2 } },
 	{0x4A, {SGMII9, SGMII10, SGMII11, SGMII12, PCIE4, PCIE4, SATA1,
 		SATA2 } },
+	{0x51, {PCIE3, PCIE3, PCIE3, PCIE3, PCIE4, PCIE4, PCIE4, PCIE4 } },
 	{0x57, {PCIE3, PCIE3, PCIE3, PCIE3, PCIE4, PCIE4, SGMII15, SGMII16 } },
 	{}
 };