add support to h753 series

Author: sohal

silicon/STMicroelectronics/stm32cubexx.devices.cmake

@@ -8,7 +8,8 @@ set (
   "STM32G431xx"
   "STM32G474xx"
   "STM32H7A3xxQ"
-  "STM32H743xx")
+  "STM32H743xx"
+  "STM32H753xx")
 
 # check if there exists a cache variable within the supported list
 if (${STM32_DEVICE} IN_LIST LIST_SUPPORTED_STM32_DEVICE)

silicon/STMicroelectronics/stm32cubexx.md

@@ -107,6 +107,7 @@ This document provides comprehensive documentation for the STM32CubeXX library i
 "STM32G474xx"    # STM32G4 series - Cortex-M4F
 "STM32H7A3xxQ"   # STM32H7 series - Cortex-M7
 "STM32H743xx"    # STM32H7 series - Cortex-M7
+"STM32H753xx"    # STM32H7 series - Cortex-M7
 ```
 
 **Validation**: Performs compile-time validation of `STM32_DEVICE` against supported list