build(versal-net): add build configs for versal-net

Add build configs for Versal NET platform for tspd.

Change-Id: Iea797a2e7ec5ce699bc704d8de673f5e79e0a543
Signed-off-by: Prasad Kummari <prasad.kummari@amd.com>
diff --git a/tf_config/versal-net-tspd b/tf_config/versal-net-tspd
new file mode 100644
index 0000000..33b41ec
--- /dev/null
+++ b/tf_config/versal-net-tspd
@@ -0,0 +1,4 @@
+CROSS_COMPILE=aarch64-none-elf-
+PLAT=versal_net
+RESET_TO_BL31=1
+SPD=tspd