adapt stm32f4 cmsis for rtt -2

SConscript

@@ -13,18 +13,18 @@ src = [os.path.join(cwd, 'Source', 'Templates', 'system_stm32f4xx.c')]
 
 # Map microcontroller units (MCUs) to their corresponding startup files
 mcu_startup_files = {
-    'STM32F401xc': 'startup_stm32f401xc.s',
-    'STM32F401xe': 'startup_stm32f401xe.s',
+    'STM32F401xC': 'startup_stm32f401xc.s',
+    'STM32F401xE': 'startup_stm32f401xe.s',
     'STM32F405xx': 'startup_stm32f405xx.s',
     'STM32F407xx': 'startup_stm32f407xx.s',
-    'STM32F410cx': 'startup_stm32f410cx.s',
-    'STM32F410rx': 'startup_stm32f410rx.s',
-    'STM32F410tx': 'startup_stm32f410tx.s',
-    'STM32F411xe': 'startup_stm32f411xe.s',
-    'STM32F412cx': 'startup_stm32f412cx.s',
-    'STM32F412rx': 'startup_stm32f412rx.s',
-    'STM32F412vx': 'startup_stm32f412vx.s',
-    'STM32F412zx': 'startup_stm32f412zx.s',
+    'STM32F410Cx': 'startup_stm32f410cx.s',
+    'STM32F410Rx': 'startup_stm32f410rx.s',
+    'STM32F410Tx': 'startup_stm32f410tx.s',
+    'STM32F411xE': 'startup_stm32f411xe.s',
+    'STM32F412Cx': 'startup_stm32f412cx.s',
+    'STM32F412Rx': 'startup_stm32f412rx.s',
+    'STM32F412Vx': 'startup_stm32f412vx.s',
+    'STM32F412Zx': 'startup_stm32f412zx.s',
     'STM32F413xx': 'startup_stm32f413xx.s',
     'STM32F415xx': 'startup_stm32f415xx.s',
     'STM32F417xx': 'startup_stm32f417xx.s',