ARM: dts: sun7i: Update A20 dts(i) files from Linux-v4.18-rc3

Update all A10 devicetree dtsi and dtsi files from Linux-v4.18-rc3
with below commit:
commit 5d9ef839f874f4e3923c8a9ae7b136c6c3912cd5
Author: Stefan Mavrodiev <stefan@olimex.com>
Date:   Wed May 16 14:38:08 2018 +0300

    ARM: dts: sun7i: Add Olimex A20-SOM-EVB-eMMC board

Note:
- Update sun7i-a20-primo73.dts as per Linux, since
  this dts is U-Boot specific.
- Drop sun7i-a20-olimex-som-evb-emmc.dts since no board
  added for this.

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
diff --git a/arch/arm/dts/sun7i-a20-olinuxino-lime2-emmc.dts b/arch/arm/dts/sun7i-a20-olinuxino-lime2-emmc.dts
index 10d3074..81f376f 100644
--- a/arch/arm/dts/sun7i-a20-olinuxino-lime2-emmc.dts
+++ b/arch/arm/dts/sun7i-a20-olinuxino-lime2-emmc.dts
@@ -57,10 +57,8 @@
 
 &pio {
 	mmc2_pins_nrst: mmc2-rst-pin {
-		allwinner,pins = "PC16";
-		allwinner,function = "gpio_out";
-		allwinner,drive = <SUN4I_PINCTRL_10_MA>;
-		allwinner,pull = <SUN4I_PINCTRL_NO_PULL>;
+		pins = "PC16";
+		function = "gpio_out";
 	};
 };