ARM: dts: rockchip: remove disable-wp from rv1108-elgin-r1 emmc node

The mmc.txt 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>
Reviewed-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

arch/arm/boot/dts/rv1108-elgin-r1.dts

@@ -37,7 +37,6 @@ &cpu0 {
 &emmc {
 	bus-width = <8>;
 	cap-mmc-highspeed;
-	disable-wp;
 	no-sd;
 	no-sdio;
 	non-removable;