fix(layerscape): fix errata a008850

Remove errata a008850 from ls1028a and ls1088a, it should
only be feasible for ls1020a, ls1043a and ls1046a.

Signed-off-by: Jiafei Pan <Jiafei.Pan@nxp.com>
Change-Id: I8ab84158a2ed6bb15b16d10f8796c3e86fc560a5
diff --git a/plat/nxp/soc-ls1028a/soc.def b/plat/nxp/soc-ls1028a/soc.def
index c23c1bb..93275b3 100644
--- a/plat/nxp/soc-ls1028a/soc.def
+++ b/plat/nxp/soc-ls1028a/soc.def
@@ -70,8 +70,8 @@
 BL2_HDR_LOC	:=	0x1800A000
 
 # SoC ERRATAS to be enabled
-ERRATA_SOC_A008850	:=	1
 
+# DDR ERRATA
 ERRATA_DDR_A009803	:=	1
 ERRATA_DDR_A009942	:=	1
 ERRATA_DDR_A010165	:=	1