board: freescale: ls1028a: mux changes for lpuart

mux changes in board file to enable lpuart1 and macro
define for lpuart1 used for mux changes in board configuation
register 13

Signed-off-by: Vabhav Sharma <vabhav.sharma@nxp.com>
Signed-off-by: Yuantian Tang <andy.tang@nxp.com>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>
diff --git a/include/configs/ls1028aqds.h b/include/configs/ls1028aqds.h
index 818b994..b910169 100644
--- a/include/configs/ls1028aqds.h
+++ b/include/configs/ls1028aqds.h
@@ -66,6 +66,13 @@
 #define CONFIG_SYS_MONITOR_BASE CONFIG_SYS_TEXT_BASE
 #endif
 
+/* LPUART */
+#ifdef CONFIG_LPUART
+#define CONFIG_LPUART_32B_REG
+#define CFG_LPUART_MUX_MASK	0xf0
+#define CFG_LPUART_EN		0xf0
+#endif
+
 /* SATA */
 #define CONFIG_SCSI_AHCI_PLAT