configs: am65x_evm_r5: Add initial support

Add initial defconfig support for AM65x
that runs on R5.

Reviewed-by: Tom Rini <trini@konsulko.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Signed-off-by: Andreas Dannenberg <dannenberg@ti.com>
Signed-off-by: Keerthy <j-keerthy@ti.com>
diff --git a/board/ti/am65x/MAINTAINERS b/board/ti/am65x/MAINTAINERS
index ca1ce58..7c52e75 100644
--- a/board/ti/am65x/MAINTAINERS
+++ b/board/ti/am65x/MAINTAINERS
@@ -4,3 +4,4 @@
 F:	board/ti/am65x/
 F:	include/configs/am65x_evm.h
 F:	configs/am65x_evm_a53_defconfig
+F:	configs/am65x_evm_r5_defconfig