arm: dts: k3-j721e: Add r5 specific dt support

Add initial support for dt that runs on r5.

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Signed-off-by: Andreas Dannenberg <dannenberg@ti.com>
diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index 50910be..77d1b60 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -772,7 +772,8 @@
 	stm32mp157c-ev1.dtb
 
 dtb-$(CONFIG_SOC_K3_AM6) += k3-am654-base-board.dtb k3-am654-r5-base-board.dtb
-dtb-$(CONFIG_SOC_K3_J721E) += k3-j721e-common-proc-board.dtb
+dtb-$(CONFIG_SOC_K3_J721E) += k3-j721e-common-proc-board.dtb \
+			      k3-j721e-r5-common-proc-board.dtb
 
 dtb-$(CONFIG_ARCH_MEDIATEK) += \
 	mt7623n-bananapi-bpi-r2.dtb \