arm64: dts: remove g-use-dma from rockchip usb nodes

A test with the command below gives these errors:

arch/arm64/boot/dts/rockchip/px30-evb.dt.yaml: usb@ff300000:
'g-use-dma', 'power-domains' do not match any of the regexes:
'pinctrl-[0-9]+'
arch/arm64/boot/dts/rockchip/rk3328-a1.dt.yaml: usb@ff580000:
'g-use-dma' does not match any of the regexes: 'pinctrl-[0-9]+'
arch/arm64/boot/dts/rockchip/rk3328-evb.dt.yaml: usb@ff580000:
'g-use-dma' does not match any of the regexes: 'pinctrl-[0-9]+'
arch/arm64/boot/dts/rockchip/rk3328-rock64.dt.yaml: usb@ff580000:
'g-use-dma' does not match any of the regexes: 'pinctrl-[0-9]+'
arch/arm64/boot/dts/rockchip/rk3328-roc-cc.dt.yaml: usb@ff580000:
'g-use-dma' does not match any of the regexes: 'pinctrl-[0-9]+'

'g-use-dma' is not a valid option in dwc2.yaml, so remove it
from all Rockchip dtsi files.

make ARCH=arm64 dtbs_check
DT_SCHEMA_FILES=Documentation/devicetree/bindings/usb/dwc2.yaml

g-use-dma was deprecated in november 2016, see
https://patchwork.kernel.org/patch/9420553/Signed-off-by: Johan Jonker <jbx6244@gmail.com>
Link: https://lore.kernel.org/r/20200228113922.20266-2-jbx6244@gmail.comSigned-off-by: Heiko Stuebner <heiko@sntech.de>

arch/arm64/boot/dts/rockchip/px30.dtsi

@@ -870,7 +870,6 @@ usb20_otg: usb@ff300000 {
 		g-np-tx-fifo-size = <16>;
 		g-rx-fifo-size = <280>;
 		g-tx-fifo-size = <256 128 128 64 32 16>;
-		g-use-dma;
 		phys = <&u2phy_otg>;
 		phy-names = "usb2-phy";
 		power-domains = <&power PX30_PD_USB>;

arch/arm64/boot/dts/rockchip/rk3328.dtsi

@@ -957,7 +957,6 @@ usb20_otg: usb@ff580000 {
 		g-np-tx-fifo-size = <16>;
 		g-rx-fifo-size = <280>;
 		g-tx-fifo-size = <256 128 128 64 32 16>;
-		g-use-dma;
 		phys = <&u2phy_otg>;
 		phy-names = "usb2-phy";
 		status = "disabled";