Add support for STM32U5 mcu

src/common/tusb_mcu.h

@@ -189,6 +189,11 @@
 #elif TU_CHECK_MCU(OPT_MCU_STM32WB)
   #define TUP_DCD_ENDPOINT_MAX    8
 
+#elif TU_CHECK_MCU(OPT_MCU_STM32U5)
+  #define TUP_USBIP_DWC2
+  #define TUP_USBIP_DWC2_STM32
+  #define TUP_DCD_ENDPOINT_MAX    6
+
 //------------- Sony -------------//
 #elif TU_CHECK_MCU(OPT_MCU_CXD56)
   #define TUP_DCD_ENDPOINT_MAX    7

src/portable/synopsys/dwc2/dwc2_stm32.h

@@ -82,6 +82,12 @@
   #define EP_MAX_FS       6
   #define EP_FIFO_SIZE_FS 1280
 
+#elif CFG_TUSB_MCU == OPT_MCU_STM32U5
+  #include "stm32u5xx.h"
+  #define USB_OTG_FS_PERIPH_BASE       USB_OTG_FS_BASE
+  #define EP_MAX_FS       6
+  #define EP_FIFO_SIZE_FS 1280
+
 #else
   #error "Unsupported MCUs"
 #endif

src/tusb_option.h

@@ -84,6 +84,7 @@ typedef int make_iso_compilers_happy;
 #define OPT_MCU_STM32G0           310 ///< ST G0
 #define OPT_MCU_STM32G4           311 ///< ST G4
 #define OPT_MCU_STM32WB           312 ///< ST WB
+#define OPT_MCU_STM32U5           313 ///< ST U5
 
 // Sony
 #define OPT_MCU_CXD56             400 ///< SONY CXD56