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_ddr4_nor_lpuart_defconfig b/configs/ls1021aqds_ddr4_nor_lpuart_defconfig
index 00d9d3e..d8d7aa1 100644
--- a/configs/ls1021aqds_ddr4_nor_lpuart_defconfig
+++ b/configs/ls1021aqds_ddr4_nor_lpuart_defconfig
@@ -12,12 +12,13 @@
 CONFIG_SYS_I2C_MXC_I2C3=y
 CONFIG_DM_GPIO=y
 CONFIG_DEFAULT_DEVICE_TREE="ls1021a-qds-lpuart"
-CONFIG_FSL_USE_PCA9547_MUX=y
-CONFIG_FSL_QIXIS=y
-# CONFIG_QIXIS_I2C_ACCESS is not set
 CONFIG_SYS_LOAD_ADDR=0x82000000
 CONFIG_ENV_ADDR=0x60300000
 CONFIG_AHCI=y
+CONFIG_LAYERSCAPE_NS_ACCESS=y
+CONFIG_FSL_USE_PCA9547_MUX=y
+CONFIG_FSL_QIXIS=y
+# CONFIG_QIXIS_I2C_ACCESS is not set
 CONFIG_SYS_MEMTEST_START=0x80000000
 CONFIG_SYS_MEMTEST_END=0x9fffffff
 CONFIG_FIT=y