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/ls1012a2g5rdb_qspi_defconfig b/configs/ls1012a2g5rdb_qspi_defconfig
index 0ab5c86..da72b39 100644
--- a/configs/ls1012a2g5rdb_qspi_defconfig
+++ b/configs/ls1012a2g5rdb_qspi_defconfig
@@ -12,6 +12,7 @@
 CONFIG_FSL_LS_PPA=y
 CONFIG_QSPI_AHB_INIT=y
 CONFIG_AHCI=y
+CONFIG_LAYERSCAPE_NS_ACCESS=y
 CONFIG_SYS_MEMTEST_START=0x80000000
 CONFIG_SYS_MEMTEST_END=0x9fffffff
 CONFIG_DISTRO_DEFAULTS=y