configs: j7200_evm_r5: Add initial support

Add initial R5 defconfig support

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
diff --git a/board/ti/j721e/MAINTAINERS b/board/ti/j721e/MAINTAINERS
index d51e899..259ff74 100644
--- a/board/ti/j721e/MAINTAINERS
+++ b/board/ti/j721e/MAINTAINERS
@@ -5,3 +5,4 @@
 F:	include/configs/j721e_evm.h
 F:	configs/j721e_evm_r5_defconfig
 F:	configs/j721e_evm_a72_defconfig
+F:	configs/j7200_evm_r5_defconfig