fdts: add missing hash node in STM32MP157C-ED1 board DT

Without this node, the board fails to boot and panics in the function
stm32mp_init_auth().

Change-Id: Ia54924410dac2a8c94dd6e45d7e93977fe7d87e2
Signed-off-by: Yann Gautier <yann.gautier@st.com>

fdts/stm32mp157c-ed1.dts

@@ -55,6 +55,10 @@
 	status="okay";
 };
 
+&hash1 {
+	status = "okay";
+};
+
 &i2c4 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&i2c4_pins_a>;