ARM: dts: rockchip: fix rk3188 emmc pull references

Fix a copy'n'paste error making the rk3188 emmc pinctrl nodes reference
the pcfg_pull_default setting that is not available on rk3188.
Reported-by: NNaoki FUKAUMI <naobsd@gmail.com>
Signed-off-by: NHeiko Stuebner <heiko@sntech.de>

arch/arm/boot/dts/rk3188.dtsi

@@ -149,15 +149,15 @@
 
 		emmc {
 			emmc_clk: emmc-clk {
-				rockchip,pins = <RK_GPIO0 24 RK_FUNC_2 &pcfg_pull_default>;
+				rockchip,pins = <RK_GPIO0 24 RK_FUNC_2 &pcfg_pull_none>;
 			};
 
 			emmc_cmd: emmc-cmd {
-				rockchip,pins = <RK_GPIO0 26 RK_FUNC_2 &pcfg_pull_default>;
+				rockchip,pins = <RK_GPIO0 26 RK_FUNC_2 &pcfg_pull_up>;
 			};
 
 			emmc_rst: emmc-rst {
-				rockchip,pins = <RK_GPIO0 27 RK_FUNC_2 &pcfg_pull_default>;
+				rockchip,pins = <RK_GPIO0 27 RK_FUNC_2 &pcfg_pull_none>;
 			};
 
 			/*