CMake: Move EP_ATLAS TELIT ME310 driver to cellular dir

This allows us to remove the cellular library as a requirement
to build applications that do not require it (i.e Blinky).

Author: hugueskamba

connectivity/drivers/cellular/CMakeLists.txt

@@ -1,10 +1,14 @@
-# Copyright (c) 2020 ARM Limited. All rights reserved.
+# Copyright (c) 2020-2021 ARM Limited. All rights reserved.
 # SPDX-License-Identifier: Apache-2.0
 
 if("STMOD_CELLULAR" IN_LIST MBED_TARGET_LABELS)
     add_subdirectory(COMPONENT_STMOD_CELLULAR)
 endif()
 
+if("EP_ATLAS" IN_LIST MBED_TARGET_LABELS)
+    add_subdirectory(TARGET_EP_ATLAS/TELIT/ME310)
+endif()
+
 add_subdirectory(Altair)
 add_subdirectory(GEMALTO)
 add_subdirectory(GENERIC)

connectivity/drivers/cellular/TARGET_EP_ATLAS/TELIT/ME310/CMakeLists.txt

@@ -0,0 +1,12 @@
+# Copyright (c) 2021 ARM Limited. All rights reserved.
+# SPDX-License-Identifier: Apache-2.0
+
+target_include_directories(mbed-cellular
+    INTERFACE
+        .
+)
+
+target_sources(mbed-cellular
+    INTERFACE
+        ONBOARD_TELIT_ME310.cpp
+)

targets/TARGET_NORDIC/TARGET_NRF5x/TARGET_NRF52/TARGET_MCU_NRF52840/TARGET_EP_ATLAS/ONBOARD_TELIT_ME310.cpp renamed to connectivity/drivers/cellular/TARGET_EP_ATLAS/TELIT/ME310/ONBOARD_TELIT_ME310.cpp

@@ -27,7 +27,6 @@ target_include_directories(mbed-ep-atlas
 
 target_sources(mbed-ep-atlas
     INTERFACE
-        TARGET_EP_ATLAS/ONBOARD_TELIT_ME310.cpp
         TARGET_EP_ATLAS/usb_stdio.cpp
         TARGET_EP_ATLAS/atlas_init.c
 )