build(zynqmp): add build configs for zynqmp

Add build configs for ZynqMP platform for
1. Debug configuration
2. DDR configuration

Signed-off-by: Akshay Belsare <akshay.belsare@amd.com>
Change-Id: I5befa61ca23b4bf4ecbe6ee8be8969929532d1ac
diff --git a/tf_config/zynqmp-debug b/tf_config/zynqmp-debug
new file mode 100644
index 0000000..6a2dd1b
--- /dev/null
+++ b/tf_config/zynqmp-debug
@@ -0,0 +1,5 @@
+CROSS_COMPILE=aarch64-none-elf-
+PLAT=zynqmp
+RESET_TO_BL31=1
+DEBUG=1
+XILINX_OF_BOARD_DTB_ADDR=0x100000