board: kontron: pitx-imx8m: Add Kontron pitx-imx8m board support

The Kontron pitx-imx8m is an NXP i.MX8MQ based board in the pITX form factor.

Signed-off-by: Heiko Thiery <heiko.thiery@gmail.com>
diff --git a/arch/arm/dts/imx8mq-kontron-pitx-imx8m-u-boot.dtsi b/arch/arm/dts/imx8mq-kontron-pitx-imx8m-u-boot.dtsi
new file mode 100644
index 0000000..6f9c814
--- /dev/null
+++ b/arch/arm/dts/imx8mq-kontron-pitx-imx8m-u-boot.dtsi
@@ -0,0 +1,12 @@
+// SPDX-License-Identifier: (GPL-2.0 OR MIT)
+
+#include "imx8mq-u-boot.dtsi"
+
+&usdhc1 {
+	mmc-hs400-1_8v;
+};
+
+&usdhc2 {
+	sd-uhs-sdr104;
+	sd-uhs-ddr50;
+};