stm32u5: Fix submodules paths

Local paths were commited to submodule definitions
This just removes prefix for submodules path and name

.gitmodules

@@ -149,9 +149,9 @@
 [submodule "hw/mcu/raspberry_pi/Pico-PIO-USB"]
 	path = hw/mcu/raspberry_pi/Pico-PIO-USB
 	url = https://github.com/sekigon-gonnoc/Pico-PIO-USB.git
-[submodule "/home/ubuntu/tinyusb/hw/mcu/st/cmsis_device_u5"]
-	path = /home/ubuntu/tinyusb/hw/mcu/st/cmsis_device_u5
+[submodule "hw/mcu/st/cmsis_device_u5"]
+	path = hw/mcu/st/cmsis_device_u5
 	url = https://github.com/STMicroelectronics/cmsis_device_u5
-[submodule "/home/ubuntu/tinyusb/hw/mcu/st/stm32u5xx_hal_driver"]
-	path = /home/ubuntu/tinyusb/hw/mcu/st/stm32u5xx_hal_driver
+[submodule "hw/mcu/st/stm32u5xx_hal_driver"]
+	path = hw/mcu/st/stm32u5xx_hal_driver
 	url = https://github.com/STMicroelectronics/stm32u5xx_hal_driver