staging: mt7621-dts: make use of 'IRQ_TYPE_LEVEL_HIGH' instead of magic numbers

Nodes 'gdma' and 'hsdma' are using magic number '4' in interrupts property.
Use 'IRQ_TYPE_LEVEL_HIGH' instead to align with the rest of the nodes in
the file.

Signed-off-by: Sergio Paracuellos <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/staging/mt7621-dts/mt7621.dtsi

···
 			reset-names = "dma";
 
 			interrupt-parent = <&gic>;
-			interrupts = <0 13 4>;
+			interrupts = <0 13 IRQ_TYPE_LEVEL_HIGH>;
 
 			#dma-cells = <1>;
 			#dma-channels = <16>;
···
 			reset-names = "hsdma";
 
 			interrupt-parent = <&gic>;
-			interrupts = <0 11 4>;
+			interrupts = <0 11 IRQ_TYPE_LEVEL_HIGH>;
 
 			#dma-cells = <1>;
 			#dma-channels = <1>;