ARM: dts: dra7xx: am57xx: fix cd-gpios definition as per hardware design and dt binding docs

As per mmc device tree binding documentation card detect gpio has
to be active low signal. When a hardware is designed with active
high card detect, gpio polarity has to be changed with
cd-inverted dt property.

In DRA74x, DRA72x and AM57xx EVMs the card detect gpio is
designed as active low gpio. So correcting the dt card detect
gpio definition.

Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/boot/dts/dra72-evm.dts

@@ -613,7 +613,7 @@
 	 * SDCD signal is not being used here - using the fact that GPIO mode
 	 * is a viable alternative
 	 */
-	cd-gpios = <&gpio6 27 0>;
+	cd-gpios = <&gpio6 27 GPIO_ACTIVE_LOW>;
 	max-frequency = <192000000>;
 };