arm64: dts: rockchip: remove disable-wp from rk3308-roc-cc emmc node

The mmc-controller.yaml didn't explicitly say disable-wp is
for SD card slot only, but that is what it was designed for
in the first place.
Remove all disable-wp from emmc or sdio controllers.
Signed-off-by: Johan Jonker <jbx6244@gmail.com>
Link: https://lore.kernel.org/r/20191219121954.2450-1-jbx6244@gmail.comSigned-off-by: Heiko Stuebner <heiko@sntech.de>

arch/arm64/boot/dts/rockchip/rk3308-roc-cc.dts

@@ -124,7 +124,6 @@ &cpu0 {
 
 &emmc {
 	cap-mmc-highspeed;
-	disable-wp;
 	mmc-hs200-1_8v;
 	non-removable;
 	status = "okay";