ARM: nomadik: move MMC/SD card detect GPIO to board DTS

This pushes the setting of the card detect GPIO pin down into
the top-level file for the board, since it is not a property of
the ASIC (which this DTSI is about) but a property of the board
design.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
diff --git a/arch/arm/boot/dts/ste-nomadik-s8815.dts b/arch/arm/boot/dts/ste-nomadik-s8815.dts
index 90d8b6c..c795ee8 100644
--- a/arch/arm/boot/dts/ste-nomadik-s8815.dts
+++ b/arch/arm/boot/dts/ste-nomadik-s8815.dts
@@ -65,6 +65,13 @@
 		};
 	};
 
+	/* Configure card detect for the uSD slot */
+	amba {
+		mmcsd: sdi@101f6000 {
+			cd-gpios = <&gpio3 15 GPIO_ACTIVE_LOW>;
+		};
+	};
+
 	/* Custom board node with GPIO pins to active etc */
 	usb-s8815 {
 		/* This will bias the MMC/SD card detect line */