arm: dts: stm32mp15: alignment with v5.18

Device tree alignment with Linux kernel v5.18-rc2:
- ARM: dts: stm32: Add support for the emtrion emSBC-Argon
  (only the pincontrol part)
- ARM: dts: stm32: Drop duplicate status okay from DHCOM gpioc node
- ARM: dts: stm32: add st,stm32-sdmmc2 compatible on stm32mp151
- ARM: dts: stm32: fix AV96 board SAI2 pin muxing on stm32mp15
- ARM: dts: stm32: use exti 19 as main interrupt to support RTC wakeup on
  stm32mp157
- ARM: dts: stm32: add DMA configuration to UART nodes on stm32mp151
- ARM: dts: stm32: keep uart4 behavior on *
- ARM: dts: stm32: Correct masks for GIC PPI interrupts on stm32mp15

Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com>
diff --git a/arch/arm/dts/stm32mp157a-microgea-stm32mp1-microdev2.0.dts b/arch/arm/dts/stm32mp157a-microgea-stm32mp1-microdev2.0.dts
index 7a75868..b9d0d3d 100644
--- a/arch/arm/dts/stm32mp157a-microgea-stm32mp1-microdev2.0.dts
+++ b/arch/arm/dts/stm32mp157a-microgea-stm32mp1-microdev2.0.dts
@@ -44,6 +44,8 @@
 	pinctrl-0 = <&uart4_pins_a>;
 	pinctrl-1 = <&uart4_sleep_pins_a>;
 	pinctrl-2 = <&uart4_idle_pins_a>;
+	/delete-property/dmas;
+	/delete-property/dma-names;
 	status = "okay";
 };
 
@@ -51,5 +53,7 @@
 &uart8 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&uart8_pins_a>;
+	/delete-property/dmas;
+	/delete-property/dma-names;
 	status = "okay";
 };