ARM: dts: meson8b: ec100: mark the SD card detection GPIO active-low

After commit 89a5e15 ("gpio/mmc/of: Respect polarity in the device
tree") SD cards are not detected anymore.

The CD GPIO is "active low" on the EC-100. The MMC dt-bindings specify:
"[...] using the "cd-inverted" property means, that the CD line is active
high, i.e. it is high, when a card is inserted".

Fix the description of the SD card by marking it as GPIO_ACTIVE_LOW and
drop the "cd-inverted" property. This makes the definition consistent
with the existing dt-bindings and fixes the check whether an SD card is
inserted.

Fixes: bbedc1f ("ARM: dts: meson8b: Add support for the Endless Mini (EC-100)")
Signed-off-by: Martin Blumenstingl <[email protected]>
Reviewed-by: Linus Walleij <[email protected]>
Signed-off-by: Kevin Hilman <[email protected]>

Author: xdarklight

arch/arm/boot/dts/meson8b-ec100.dts

@@ -205,8 +205,7 @@
 		cap-sd-highspeed;
 		disable-wp;
 
-		cd-gpios = <&gpio CARD_6 GPIO_ACTIVE_HIGH>;
-		cd-inverted;
+		cd-gpios = <&gpio CARD_6 GPIO_ACTIVE_LOW>;
 
 		vmmc-supply = <&vcc_3v3>;
 	};