ARM: dts: STiH407: Move non-removable property to board file

Due to 96board which uses mmc0 node for SD card, the non-removable
property must be moved from STiH407-family to board file for B2120
and B2199 boards.
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Reviewed-by: Peter Griffin <peter.griffin@linaro.org>

arch/arm/boot/dts/stih407-family.dtsi

@@ -553,7 +553,6 @@ mmc0: sdhci@09060000 {
 			clock-names = "mmc";
 			clocks = <&clk_s_c0_flexgen CLK_MMC_0>;
 			bus-width = <8>;
-			non-removable;
 		};
 
 		mmc1: sdhci@09080000 {

arch/arm/boot/dts/stih418-b2199.dts

@@ -86,6 +86,7 @@ mmc0: sdhci@09060000 {
 			sd-uhs-sdr50;
 			sd-uhs-sdr104;
 			sd-uhs-ddr50;
+			non-removable;
 		};
 
 		miphy28lp_phy: miphy28lp@9b22000 {

arch/arm/boot/dts/stihxxx-b2120.dtsi

@@ -65,6 +65,7 @@ i2c@9540000 {
 		};
 
 		mmc0: sdhci@09060000 {
+			non-removable;
 			status = "okay";
 		};