feat(lx2): enable OCRAM ECC

Fix OCRAM ECC for lx2 platform.

Signed-off-by: Jiafei Pan <Jiafei.Pan@nxp.com>
Change-Id: Ic46de7a40c611764a6f24400663da50e6b477ae5
diff --git a/plat/nxp/soc-lx2160a/soc.def b/plat/nxp/soc-lx2160a/soc.def
index 81d6744..0442962 100644
--- a/plat/nxp/soc-lx2160a/soc.def
+++ b/plat/nxp/soc-lx2160a/soc.def
@@ -114,3 +114,6 @@
 
 # enable dynamic memory mapping
 PLAT_XLAT_TABLES_DYNAMIC :=	1
+
+# OCRAM ECC Enabled
+OCRAM_ECC_EN            :=      yes