arm: dts: k3-j721e-r5-sk: Add initial R5 specific dts support for j721e-sk

Add R5 specific dts for J721E-SK

Signed-off-by: Sinthu Raja <sinthu.raja@ti.com>
diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index 4bcccc7..086533b 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -1140,7 +1140,8 @@
 			      k3-j721e-r5-common-proc-board.dtb \
 			      k3-j7200-common-proc-board.dtb \
 			      k3-j7200-r5-common-proc-board.dtb \
-			      k3-j721e-sk.dtb
+			      k3-j721e-sk.dtb \
+			      k3-j721e-r5-sk.dtb
 dtb-$(CONFIG_SOC_K3_J721S2) += k3-j721s2-common-proc-board.dtb\
 			       k3-j721s2-r5-common-proc-board.dtb
 dtb-$(CONFIG_SOC_K3_AM642) += k3-am642-evm.dtb \