Add BlueNRG_2 component entry

Signed-off-by: Andrea PALMIERI <[email protected]>

Author: apalmieriGH

connectivity/drivers/ble/FEATURE_BLE/CMakeLists.txt

@@ -1,6 +1,10 @@
 # Copyright (c) 2020 ARM Limited. All rights reserved.
 # SPDX-License-Identifier: Apache-2.0
 
+if("BlueNRG_2" IN_LIST MBED_TARGET_LABELS)
+    add_subdirectory(COMPONENT_BlueNRG_2)
+endif()
+
 if("BlueNRG_MS" IN_LIST MBED_TARGET_LABELS)
     add_subdirectory(COMPONENT_BlueNRG_MS)
 endif()