[DM/FEATURE] Support import SoC Pinctrl config

Signed-off-by: GuEe-GUI <2991707448@qq.com>

components/drivers/pinctrl/Kconfig

@@ -4,3 +4,6 @@ menuconfig RT_USING_PINCTRL
     depends on RT_USING_PIN
     default n
 
+if RT_USING_PINCTRL
+    osource "$(SOC_DM_PINCTRL_DIR)/Kconfig"
+endif