arm/ls102xa: use a array to define pexmscportsr

Signed-off-by: Minghuan Lian <Minghuan.Lian@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>

arch/arm/include/asm/arch-ls102xa/immap_ls102xa.h

@@ -170,8 +170,7 @@ struct ccsr_scfg {
 	u32 pex1rdmmsgrqsr;
 	u32 pex2rdmmsgrqsr;
 	u32 spimsiclrcr;
-	u32 pex1mscportsr;
-	u32 pex2mscportsr;
+	u32 pexmscportsr[2];
 	u32 pex2pmwrcr;
 	u32 resv5[24];
 	u32 mac1_streamid;