ipq40xx: fix FRITZBox 7530 NAND controller node

This removes the 'cs-gpios' property from the AVM FRITZ!Box 7530 NAND
controller node. As pointed out by Christian Lamparter, the property is
not needed by the Qualcomm NAND controller driver.

Signed-off-by: David Bauer <mail@david-bauer.net>

target/linux/ipq40xx/files-4.14/arch/arm/boot/dts/qcom-ipq4019-fritzbox-7530.dts

@@ -167,7 +167,6 @@
 	pinctrl-0 = <&nand_pins>;
 	pinctrl-names = "default";
 	status = "okay";
-	cs-gpios = <&tlmm 54 GPIO_ACTIVE_HIGH>;
 
 	nand@0 {
 		partitions {

target/linux/ipq40xx/files-4.19/arch/arm/boot/dts/qcom-ipq4019-fritzbox-7530.dts

@@ -171,7 +171,6 @@
 	pinctrl-0 = <&nand_pins>;
 	pinctrl-names = "default";
 	status = "okay";
-	cs-gpios = <&tlmm 54 GPIO_ACTIVE_HIGH>;
 
 	nand@0 {
 		partitions {