*-pinctrl.dtsi: add pinctrl files for stm32mp2 soc

Add the pinctrl files for stm32mp2 soc series. These files are generated
from the open pin data repository, a subset of official release
STM32CubeMX 6.14.0, using the genpinctrl.py script.

Origin: ST Microelectronics
License: BSD-3-Clause
URL: https://github.com/STMicroelectronics/STM32_open_pin_data
Commit: 5e641448dc7df619ee46bb0c91796b7626005929
Purpose: *-pinctrl.dtsi for stm32mp2
Maintained-by: External

Signed-off-by: Youssef Zini <youssef.zini@savoirfairelinux.com>

Author: youssefz24

dts/st/mp2/stm32mp231aajx-pinctrl.dtsi

@@ -66,6 +66,7 @@
     "stm32l4": 0x48000000,
     "stm32l5": 0x42020000,
     "stm32mp1": 0x50002000,
+    "stm32mp2": 0x44240000,
     "stm32n6": 0x56020000,
     "stm32u0": 0x50000000,
     "stm32u5": 0x42020000,