build/xilinx/vivado.py: Allow a tcl script to be added as ip. These tcl scripts tend to generate .xci's on the fly. The tcl script can be looked up in the vivado console as the ip is generated

litex/build/xilinx/vivado.py

@@ -171,6 +171,9 @@ class XilinxVivadoToolchain:
         # Add IPs
         tcl.append("\n# Add IPs\n")
         for filename, disable_constraints in platform.ips.items():
+            if filename.endswith("tcl"):
+                tcl += open(filename, "r").read().splitlines()
+            else:
                 filename_tcl = "{" + filename + "}"
                 ip = os.path.splitext(os.path.basename(filename))[0]
                 tcl.append("read_ip " + filename_tcl)