arm: dts: k3-am642: Add r5 specific dt support

Add initial support for dt that runs on r5.

Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index 7657ccb..a61f34a 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -1056,7 +1056,8 @@
 			      k3-j721e-r5-common-proc-board.dtb \
 			      k3-j7200-common-proc-board.dtb \
 			      k3-j7200-r5-common-proc-board.dtb
-dtb-$(CONFIG_SOC_K3_AM642) += k3-am642-evm.dtb
+dtb-$(CONFIG_SOC_K3_AM642) += k3-am642-evm.dtb \
+			      k3-am642-r5-evm.dtb
 
 dtb-$(CONFIG_ARCH_MEDIATEK) += \
 	mt7622-rfb.dtb \