ARM: dts: meson-sm1: add u-boot specific MMC controller compatible

In order to enable the Amlogic SM1 MMC controller fix, we need to add a u-boot specific
MMC controller compatible.

This adds a new meson-sm1-u-boot.dtsi and reworks the other -u-boot.dtsi
to use this for SM1 based boards.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
diff --git a/arch/arm/dts/meson-sm1-odroid-c4-u-boot.dtsi b/arch/arm/dts/meson-sm1-odroid-c4-u-boot.dtsi
index 2a8f054..c431988 100644
--- a/arch/arm/dts/meson-sm1-odroid-c4-u-boot.dtsi
+++ b/arch/arm/dts/meson-sm1-odroid-c4-u-boot.dtsi
@@ -4,7 +4,7 @@
  * Author: Neil Armstrong <narmstrong@baylibre.com>
  */
 
-#include "meson-g12-common-u-boot.dtsi"
+#include "meson-sm1-u-boot.dtsi"
 
 &ethmac {
 	snps,reset-gpio = <&gpio GPIOZ_15 (GPIO_ACTIVE_LOW | GPIO_OPEN_DRAIN)>;