[bsp][stm32l475] move arduino to application

bsp/stm32/stm32l475-atk-pandora/applications/SConscript

@@ -8,9 +8,6 @@ src = ['main.c']
 if GetDepend(['PKG_USING_NRF24L01']):
     src += ['nrf24l01_init.c']
 
-if GetDepend(['RT_USING_ARDUINO']):
-    src += ['arduino_main.cpp']
-
 CPPPATH = [cwd]
 
 group = DefineGroup('Applications', src, depend = [''], CPPPATH = CPPPATH)

bsp/stm32/stm32l475-atk-pandora/board/ports/arduino/SConscript → bsp/stm32/stm32l475-atk-pandora/applications/arduino/SConscript

@@ -6,4 +6,7 @@ inc = [cwd]
 
 group = DefineGroup('Arduino', src, depend = ['RT_USING_ARDUINO'], CPPPATH = inc)
 
+src = ['arduino_main.cpp']
+group = DefineGroup('Applications', src, depend = ['RT_USING_ARDUINO'])
+
 Return('group')