fix(plat/nxp/ls1028a): define endianness of scfg and gpio

Define endianness of scfg and gpio.

Signed-off-by: Jiafei Pan <Jiafei.Pan@nxp.com>
Change-Id: Ifa18b4fcfc45154c23d54692b374bab293c51a04
diff --git a/plat/nxp/soc-ls1028a/soc.def b/plat/nxp/soc-ls1028a/soc.def
index e133982..c23c1bb 100644
--- a/plat/nxp/soc-ls1028a/soc.def
+++ b/plat/nxp/soc-ls1028a/soc.def
@@ -88,6 +88,8 @@
 NXP_ESDHC_ENDIANNESS	:=	LE
 NXP_QSPI_ENDIANNESS	:=	LE
 NXP_FSPI_ENDIANNESS	:=	LE
+NXP_SCFG_ENDIANNESS	:=	LE
+NXP_GPIO_ENDIANNESS	:=	LE
 
 NXP_SFP_VER		:=	3_4