CMake ble: move cordio add_library to own modules

connectivity/FEATURE_BLE/CMakeLists.txt

@@ -2,11 +2,6 @@
 # SPDX-License-Identifier: Apache-2.0
 
 add_library(mbed-ble OBJECT)
-# cordio libraries are part of ble stack (_ll is optional)
-# We use INTERFACE libraries to form the main object library otherwise we would 
-# get circular deps error between ble <-> cordio
-add_library(mbed-ble-cordio INTERFACE)
-add_library(mbed-ble-cordio-ll INTERFACE)
 
 add_subdirectory(libraries)
 add_subdirectory(source)

connectivity/FEATURE_BLE/libraries/CMakeLists.txt

@@ -1,6 +1,10 @@
 # Copyright (c) 2020 ARM Limited. All rights reserved.
 # SPDX-License-Identifier: Apache-2.0
 
+# We use INTERFACE library to form the main object library otherwise we would 
+# get circular deps error between ble <-> cordio
+add_library(mbed-ble-cordio INTERFACE)
+
 if("CORDIO_LL" IN_LIST MBED_TARGET_LABELS)
     add_subdirectory(TARGET_CORDIO_LL)
 endif()

connectivity/FEATURE_BLE/libraries/TARGET_CORDIO_LL/CMakeLists.txt

@@ -1,6 +1,9 @@
 # Copyright (c) 2020 ARM Limited. All rights reserved.
 # SPDX-License-Identifier: Apache-2.0
 
+# INTERFACE library due to deps between ble <-> cordio-ll
+add_library(mbed-ble-cordio-ll INTERFACE)
+
 target_include_directories(mbed-ble-cordio-ll
     INTERFACE
         .