ARM: dts: stm32: Adapt stm32mp157 pinctrl to manage STM32MP15xx SOCs family

This commit modifies stm32mp157 pinctrl files to better manage STM32MP15xx
SOCs diversity. Pin controller and gpio controller are moved to common SOC
dtsi file. Only pin groups remain in the main pinctrl dtsi file.

Signed-off-by: Alexandre Torgue <alexandre.torgue@st.com>
2 files changed