ARM: dts: stm32: don't use timers dmas on stm32mp157c-ev1

Spare dmas when using timers on stm32mp157c-ev1.
Signed-off-by: NFabrice Gasnier <fabrice.gasnier@st.com>
Signed-off-by: NAlexandre Torgue <alexandre.torgue@st.com>

arch/arm/boot/dts/stm32mp157c-ev1.dts

@@ -161,6 +161,9 @@
 };
 
 &timers2 {
+	/* spare dmas for other usage (un-delete to enable pwm capture) */
+	/delete-property/dmas;
+	/delete-property/dma-names;
 	status = "disabled";
 	pwm {
 		pinctrl-0 = <&pwm2_pins_a>;
@@ -173,6 +176,8 @@
 };
 
 &timers8 {
+	/delete-property/dmas;
+	/delete-property/dma-names;
 	status = "disabled";
 	pwm {
 		pinctrl-0 = <&pwm8_pins_a>;
@@ -185,6 +190,8 @@
 };
 
 &timers12 {
+	/delete-property/dmas;
+	/delete-property/dma-names;
 	status = "disabled";
 	pwm {
 		pinctrl-0 = <&pwm12_pins_a>;