board: presidio-asic: update eMMC DT information

Change DT compatibility name to match change in driver's name.
Remove unused io_ds and fifo_mode fields from DT.
Signed-off-by: NAlex Nemirovsky <alex.nemirovsky@cortina-access.com>
CC: Peng Fan <peng.fan@nxp.com>
CC: Jaehoon Chung <jh80.chung@samsung.com>
CC: Tom Rini <trini@konsulko.com>

arch/arm/dts/ca-presidio-engboard.dts

@@ -10,11 +10,9 @@
    #size-cells = <1>;
 
 	mmc0: mmc@f4400000 {
-		compatible = "snps,dw-cortina";
+		compatible = "cortina,ca-mmc";
 		reg = <0x0 0xf4400000 0x1000>;
 		bus-width = <4>;
-		io_ds = <0x77>;
-		fifo-mode;
 		sd_dll_ctrl = <0xf43200e8>;
 		io_drv_ctrl = <0xf432004c>;
 	};