ARM: dts: imxrt1050: Migrate to OF_UPSTREAM

The device tree for imxrt1050 is now
available in the /dts/upstream directory.
Migrate board to use OF_UPSTREAM.

Signed-off-by: Jesse Taube <Mr.Bossman075@gmail.com>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index 267b017..ac42461 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -918,8 +918,7 @@
 	imx93-var-som-symphony.dtb \
 	imx93-phyboard-segin.dtb
 
-dtb-$(CONFIG_ARCH_IMXRT) += imxrt1050-evk.dtb \
-	imxrt1020-evk.dtb \
+dtb-$(CONFIG_ARCH_IMXRT) += imxrt1020-evk.dtb \
 	imxrt1170-evk.dtb \
 
 dtb-$(CONFIG_RZA1) += \