fix(orfs): use our fork of the IHP PDK (#73)

* fix(orfs): remove special handling of DRC error Pin.f.M5

* fix(orfs): remove patch for IHP PDK

We use our own fork now with the patch integrated.

* fix(orfs): allow updating ORFS platform files from IHP PDK

---------

Co-authored-by: htfab <mpw@htamas.net>

project.py

@@ -721,10 +721,9 @@ class Project:
                 drc_ok = True
                 for line in f:
                     line = line.strip()
-                    if m := re.match("<category>'([^']*)'</category>", line):
-                        if m[1] != "Pin.f.M5":
-                            drc_ok = False
-                            break
+                    if re.match("<category>'([^']*)'</category>", line):
+                        drc_ok = False
+                        break
                 if drc_ok:
                     logging.info("DRC passed")
                 else: