ARM: dts: stm32: add disable-wp property for SD-card on STM32MP1 boards

On STM32MP1 DK1, DK2, ED1 and EV1 boards, there is only a micro SD socket.
This is also the case on Avenger board.
They don't support the Write Protect pin.
The disable-wp is then added in the SD-cards sdmmc1 nodes.
This avoids executing some code and a warning during driver probe.
Signed-off-by: Yann Gautier <yann.gautier@st.com>
Signed-off-by: Alexandre Torgue <alexandre.torgue@st.com>

arch/arm/boot/dts/stm32mp157a-avenger96.dts

@@ -293,6 +293,7 @@ &sdmmc1 {
 	pinctrl-1 = <&sdmmc1_b4_od_pins_a>;
 	pinctrl-2 = <&sdmmc1_b4_sleep_pins_a>;
 	cd-gpios = <&gpioi 8 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>;
+	disable-wp;
 	st,sig-dir;
 	st,neg-edge;
 	st,use-ckin;

arch/arm/boot/dts/stm32mp157c-ed1.dts

@@ -313,6 +313,7 @@ &sdmmc1 {
 	pinctrl-1 = <&sdmmc1_b4_od_pins_a &sdmmc1_dir_pins_a>;
 	pinctrl-2 = <&sdmmc1_b4_sleep_pins_a &sdmmc1_dir_sleep_pins_a>;
 	cd-gpios = <&gpiog 1 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>;
+	disable-wp;
 	st,sig-dir;
 	st,neg-edge;
 	st,use-ckin;

arch/arm/boot/dts/stm32mp15xx-dkx.dtsi

@@ -479,6 +479,7 @@ &sdmmc1 {
 	pinctrl-1 = <&sdmmc1_b4_od_pins_a>;
 	pinctrl-2 = <&sdmmc1_b4_sleep_pins_a>;
 	cd-gpios = <&gpiob 7 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>;
+	disable-wp;
 	st,neg-edge;
 	bus-width = <4>;
 	vmmc-supply = <&v3v3>;