revert stm32l0xx change.

bsp/stm32/stm32l010-st-nucleo/SConstruct

@@ -50,7 +50,7 @@ Export('SDK_LIB')
 # prepare building environment
 objs = PrepareBuilding(env, RTT_ROOT, has_libcpu=False)
 
-stm32_library = 'STM32L4xx_HAL'
+stm32_library = 'STM32L0xx_HAL'
 rtconfig.BSP_LIBRARY_TYPE = stm32_library
 
 bsp_vdir = 'build'

bsp/stm32/stm32l053-st-nucleo/SConstruct

@@ -50,7 +50,7 @@ Export('SDK_LIB')
 # prepare building environment
 objs = PrepareBuilding(env, RTT_ROOT, has_libcpu=False)
 
-stm32_library = 'STM32L4xx_HAL'
+stm32_library = 'STM32L0xx_HAL'
 rtconfig.BSP_LIBRARY_TYPE = stm32_library
 
 bsp_vdir = 'build'