[bsp][lpc54114] 修复drv_gpio.c drv_romfs.c驱动未被默认编译的问题.

bsp/lpc54114-lite/drivers/SConscript

@@ -5,6 +5,7 @@ cwd = GetCurrentDir()
 src = Split("""
 board.c
 clock_config.c
+drv_gpio.c
 """)
 
 CPPPATH = [cwd]
@@ -19,6 +20,9 @@ if GetDepend('BSP_USING_SPI2'):
 if GetDepend('BSP_USING_I2C4'):
     src = src + ['drv_i2c.c'] 
 
+if GetDepend('BSP_USING_ROMFS'):
+    src = src + ['drv_romfs.c'] 
+
 if GetDepend('BSP_USING_SDCARD'):
     src = src + ['drv_sdcard.c']