Macro drone_stm32_map_periph_gpio::periph_gpio_d_head

macro_rules! periph_gpio_d_head {
    periph::map! {
            #[doc = $port_macro_doc]
            pub macro $port_macro;

            #[doc = $port_ty_doc]
            pub struct $port_ty;

            impl GpioHeadMap for $port_ty {}

            drone_stm32_map_pieces::reg;
            crate::head;

            RCC {
                BUSENR {
                    $busenr Shared;
                    GPIOEN { $gpioen }
                }
                BUSRSTR {
                    $busrstr Shared;
                    GPIORST { $gpiorst }
                }
                #[cfg(any(
                    feature = "stm32l4x1",
                    feature = "stm32l4x2",
                    feature = "stm32l4x3",
                    feature = "stm32l4x5",
                    feature = "stm32l4x6",
                    feature = "stm32l4r5",
                    feature = "stm32l4r7",
                    feature = "stm32l4r9",
                    feature = "stm32l4s5",
                    feature = "stm32l4s7",
                    feature = "stm32l4s9"
                ))]
                BUSSMENR {
                    $bussmenr Shared;
                    GPIOSMEN { $gpiosmen }
                }
            }

            GPIO {
                $gpio;
                LCKR {
                    LCKR Shared;
                    LCKK { LCKK }
                }
            }
        } => { ... };
}

Extracts GPIO port D head register tokens.