Resolve build issues in test

mbed.h was added in test, via greentea and utest header files. 'mbed.h' is removed
from header files and required header file and namespace is added to CPP/C files

TESTS/lorawan/loraradio/main.cpp

@@ -38,6 +38,7 @@
 
 
 using namespace utest::v1;
+using namespace mbed;
 
 static LoRaRadio *radio = NULL;
 rtos::Semaphore event_sem(0);

TESTS/mbed_platform/FileHandle/TestFile.h

@@ -18,14 +18,13 @@
 
 #include "platform/FileHandle.h"
 
-
 #define POS_IS_VALID(pos) (pos >= 0 && pos < _end)
 #define NEW_POS_IS_VALID(pos) (pos >= 0 && pos < (int32_t)FILE_SIZE)
 #define SEEK_POS_IS_VALID(pos) (pos >= 0 && pos <= _end)
 #define INVALID_POS (-1)
 
 template<uint32_t FILE_SIZE>
-class TestFile : public FileHandle {
+class TestFile : public mbed::FileHandle {
 public:
     TestFile(): _pos(0), _end(0) {}
     ~TestFile() {}

components/storage/blockdevice/COMPONENT_SPIF/TESTS/block_device/spif/main.cpp

@@ -18,6 +18,7 @@
 #include "utest.h"
 #include "SPIFBlockDevice.h"
 #include "mbed_trace.h"
+#include "rtos/Thread.h"
 #include <stdlib.h>
 
 using namespace utest::v1;

features/device_key/TESTS/device_key/functionality/main.cpp

@@ -25,6 +25,7 @@
 #endif
 
 using namespace utest::v1;
+using namespace mbed;
 
 #define MSG_VALUE_DUMMY "0"
 #define MSG_VALUE_LEN 32

features/frameworks/greentea-client/source/greentea_metrics.cpp

@@ -36,6 +36,7 @@ typedef struct {
 
 #include "rtos/Mutex.h"
 #include "rtos/Thread.h"
+#include "rtos/Kernel.h"
 #include "mbed_stats.h"
 #include "cmsis_os2.h"
 #include "platform/SingletonPtr.h"

features/nanostack/mbed-mesh-api/source/NanostackEMACInterface.cpp

@@ -2,12 +2,11 @@
  * Copyright (c) 2017 ARM Limited. All rights reserved.
  */
 
-#include "Nanostack.h"
 #include "NanostackEthernetInterface.h"
 #include "NanostackEthernetPhy.h"
-#include "EMAC.h"
 #include "nsdynmemLIB.h"
 #include "arm_hal_phy.h"
+#include "EMAC.h"
 
 class EMACPhy : public NanostackEthernetPhy
 {

features/storage/TESTS/filesystem/general_filesystem/main.cpp

@@ -18,6 +18,8 @@
 #include "utest/utest.h"
 #include "BlockDevice.h"
 #include "FileSystem.h"
+
+#include <stdlib.h>
 #if COMPONENT_SPIF
 #include "SPIFBlockDevice.h"
 #include "LittleFileSystem.h"
@@ -32,6 +34,7 @@
 #endif
 
 using namespace utest::v1;
+using namespace mbed;
 
 static const size_t small_buf_size = 10;
 static const size_t medium_buf_size = 250;