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 <[e-mail]>
Reviewed-by: Shawn Lin <[e-mail]>
Signed-off-by: Heiko Stuebner <[e-mail]>

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

···
 &emmc {
 	bus-width = <8>;
 	cap-mmc-highspeed;
-	disable-wp;
 	no-sd;
 	no-sdio;
 	non-removable;