Convert CONFIG_LAYERSCAPE_NS_ACCESS to Kconfig

This converts the following to Kconfig:
   CONFIG_LAYERSCAPE_NS_ACCESS

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/configs/ls1046afrwy_tfa_defconfig b/configs/ls1046afrwy_tfa_defconfig
index 95ecf2a..1c0a24a 100644
--- a/configs/ls1046afrwy_tfa_defconfig
+++ b/configs/ls1046afrwy_tfa_defconfig
@@ -10,12 +10,13 @@
 CONFIG_ENV_SECT_SIZE=0x40000
 CONFIG_DM_GPIO=y
 CONFIG_DEFAULT_DEVICE_TREE="fsl-ls1046a-frwy"
-CONFIG_FSL_USE_PCA9547_MUX=y
 CONFIG_QSPI_AHB_INIT=y
 CONFIG_ARMV8_SEC_FIRMWARE_SUPPORT=y
 CONFIG_SEC_FIRMWARE_ARMV8_PSCI=y
 CONFIG_ENV_ADDR=0x40500000
 CONFIG_AHCI=y
+CONFIG_LAYERSCAPE_NS_ACCESS=y
+CONFIG_FSL_USE_PCA9547_MUX=y
 CONFIG_DISTRO_DEFAULTS=y
 CONFIG_REMAKE_ELF=y
 CONFIG_MP=y