ARM: dts: Mark SDIO as non-removable in exynos5420-peach-pit

The Exynos5420 Peach Pit Chromebook has a Marvell WiFi SDIO chip which
can't neither be removed nor be detected. But the node isn't marked
as non-removable and instead has the broken-cd DT property.

This causes the device to be removed when the system enters into a
suspend state and the following warnings is shown after a resume:

[  181.944636] mmc2: error -2 during resume (card was removed?)

Also remove the card-detect-delay property that is not needed with
non-removable.
Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com>
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>

arch/arm/boot/dts/exynos5420-peach-pit.dts

@@ -709,10 +709,9 @@ &mmc_0 {
 &mmc_1 {
 	status = "okay";
 	num-slots = <1>;
-	broken-cd;
+	non-removable;
 	cap-sdio-irq;
 	keep-power-in-suspend;
-	card-detect-delay = <200>;
 	clock-frequency = <400000000>;
 	samsung,dw-mshc-ciu-div = <1>;
 	samsung,dw-mshc-sdr-timing = <0 1>;