add gd32407v-start

Author: Ouxiaolong

bsp/gd32/gd32407v-start/board/SConscript

@@ -20,7 +20,7 @@ if rtconfig.CROSS_TOOL == 'gcc':
 elif rtconfig.CROSS_TOOL == 'keil':
     src += [startup_path_prefix + '/GD32F4xx_HAL/CMSIS/GD/GD32F4xx/Source/ARM/startup_gd32f4xx.s']
 
-CPPDEFINES = ['GD3232F407xx']
+CPPDEFINES = ['GD32F407xx']
 group = DefineGroup('Drivers', src, depend = [''], CPPPATH = path, CPPDEFINES = CPPDEFINES)
 
 Return('group')