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/ls1021aqds_sdcard_qspi_defconfig b/configs/ls1021aqds_sdcard_qspi_defconfig
index addd100..724c410 100644
--- a/configs/ls1021aqds_sdcard_qspi_defconfig
+++ b/configs/ls1021aqds_sdcard_qspi_defconfig
@@ -16,14 +16,15 @@
 CONFIG_DM_GPIO=y
 CONFIG_DEFAULT_DEVICE_TREE="ls1021a-qds-duart"
 CONFIG_SPL_TEXT_BASE=0x10000000
-CONFIG_FSL_USE_PCA9547_MUX=y
-CONFIG_FSL_QIXIS=y
 CONFIG_SPL_MMC=y
 CONFIG_SPL_SERIAL=y
 CONFIG_SPL_DRIVERS_MISC=y
 CONFIG_SPL=y
 CONFIG_SYS_LOAD_ADDR=0x82000000
 CONFIG_AHCI=y
+CONFIG_LAYERSCAPE_NS_ACCESS=y
+CONFIG_FSL_USE_PCA9547_MUX=y
+CONFIG_FSL_QIXIS=y
 CONFIG_SYS_MEMTEST_START=0x80000000
 CONFIG_SYS_MEMTEST_END=0x9fffffff
 CONFIG_FIT=y