MAINTAINERS: add Clément Le Goffic as STM32 HDP maintainer

Add Clément Le Goffic as STM32 HDP maintainer.

Signed-off-by: Clément Le Goffic <clement.legoffic@foss.st.com>
Link: https://lore.kernel.org/20250711-hdp-upstream-v7-3-faeecf7aaee1@foss.st.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

Author: clegoffic

MAINTAINERS

@@ -23458,6 +23458,12 @@ F:	drivers/bus/stm32_etzpc.c
 F:	drivers/bus/stm32_firewall.c
 F:	drivers/bus/stm32_rifsc.c
 
+ST STM32 HDP PINCTRL DRIVER
+M:	Clément Le Goffic <legoffic.clement@gmail.com>
+S:	Maintained
+F:	Documentation/devicetree/bindings/pinctrl/st,stm32-hdp.yaml
+F:	drivers/pinctrl/stm32/pinctrl-stm32-hdp.c
+
 ST STM32 I2C/SMBUS DRIVER
 M:	Pierre-Yves MORDRET <pierre-yves.mordret@foss.st.com>
 M:	Alain Volmat <alain.volmat@foss.st.com>