uboot: (firmwareOdroidC2/C4) don't invoke patch tool, use patches = [] instead

https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/generic/setup.sh#L948
this can do it nicely.

Signed-off-by: Anton Arapov <anton@deadbeef.mx>

pkgs/development/tools/build-managers/bazel/update-srcDeps.py

@@ -0,0 +1,62 @@
+#!/usr/bin/env python3
+import sys
+import json
+
+if len(sys.argv) == 1:
+    print("usage: ./this-script WORKSPACE", file=sys.stderr)
+    print("Takes the bazel WORKSPACE file and reads all archives into a json dict (by evaling it as python code)", file=sys.stderr)
+    print("Hail Eris.", file=sys.stderr)
+    sys.exit(1)
+
+http_archives = []
+
+# just the kw args are the dict { name, sha256, urls … }
+def http_archive(**kw):
+    http_archives.append(kw)
+# like http_file
+def http_file(**kw):
+    http_archives.append(kw)
+
+# this is inverted from http_archive/http_file and bundles multiple archives
+def distdir_tar(**kw):
+    for archive_name in kw['archives']:
+        http_archives.append({
+            "name": archive_name,
+            "sha256": kw['sha256'][archive_name],
+            "urls": kw['urls'][archive_name]
+        })
+
+# stubs for symbols we are not interested in
+# might need to be expanded if new bazel releases add symbols to the workspace
+def workspace(name): pass
+def load(*args): pass
+def bind(**kw): pass
+def list_source_repository(**kw): pass
+def new_local_repository(**kw): pass
+def local_repository(**kw): pass
+DOC_VERSIONS = []
+def stardoc_repositories(**kw): pass
+def skydoc_repositories(**kw): pass
+def rules_sass_dependencies(**kw): pass
+def node_repositories(**kw): pass
+def sass_repositories(**kw): pass
+def register_execution_platforms(*args): pass
+def rbe_autoconfig(*args, **kw): pass
+def rules_pkg_dependencies(*args, **kw): pass
+def winsdk_configure(*args, **kw): pass
+def register_local_rc_exe_toolchains(*args, **kw): pass
+def register_toolchains(*args, **kw): pass
+def debian_deps(): pass
+def grpc_deps(): pass
+def grpc_extra_deps(): pass
+def bazel_skylib_workspace(): pass
+
+# execute the WORKSPACE like it was python code in this module,
+# using all the function stubs from above.
+with open(sys.argv[1]) as f:
+    exec(f.read())
+
+# transform to a dict with the names as keys
+d = { el['name']: el for el in http_archives }
+
+print(json.dumps(d, sort_keys=True, indent=4))