debug: move segger configs to subsys/debug

We have dependency on this module in code which is part of Zephyr. When
this module is split out of the tree we need to be able to build. Move
this Kconfig part to be part of zephyr and keep the external code in
ext/ with plan to split it out on the future.

Signed-off-by: Anas Nashif <anas.nashif@intel.com>

ext/Kconfig

@@ -20,6 +20,4 @@ source "ext/lib/ipc/open-amp/Kconfig"
 
 source "ext/lib/mgmt/Kconfig"
 
-source "ext/debug/Kconfig"
-
 endmenu

ext/debug/Kconfig

@@ -1,15 +0,0 @@
-# Kconfig - external debug source code configuration options
-
-#
-# Copyright (c) 2016 Nordic Semiconductor ASA.
-#
-# SPDX-License-Identifier: Apache-2.0
-#
-
-# When adding new entries keep the list in alphabetical order
-
-menu "Debug libraries"
-
-source "ext/debug/segger/Kconfig"
-
-endmenu

subsys/debug/Kconfig

@@ -256,3 +256,7 @@ config TRACING_CPU_STATS_INTERVAL
 	  Time period of displaying information about CPU usage.
 
 endmenu
+
+
+
+source "subsys/debug/Kconfig.segger"