ARM: tegra124: convert TEGRA_SUPPORT_NON_SECURE into Kconfig

Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
diff --git a/arch/arm/mach-tegra/Kconfig b/arch/arm/mach-tegra/Kconfig
index b18885f..fb1a46b 100644
--- a/arch/arm/mach-tegra/Kconfig
+++ b/arch/arm/mach-tegra/Kconfig
@@ -176,6 +176,13 @@
 	  USB controller when U-Boot boots to avoid leaving a stale USB device
 	  present.
 
+config TEGRA_SUPPORT_NON_SECURE
+	bool "Support executing U-Boot in non-secure (NS) mode"
+	depends on TEGRA124
+	help
+	  Certain impossible actions will be skipped if the CPU is in NS mode,
+	  such as ARM architectural timer initialization.
+
 config CI_UDC_HAS_HOSTPC
 	def_bool y
 	depends on CI_UDC && !TEGRA20