Android: Add missing depfile input for base module

Noticed this during code inspection. Not fixing a known bug.

Change-Id: Ic4ad70dc478e8162818b69d8d71e5b635b6d0c76
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2068933
Auto-Submit: Andrew Grieve <agrieve@chromium.org>
Reviewed-by: Henrique Nakashima <hnakashima@chromium.org>
Commit-Queue: Henrique Nakashima <hnakashima@chromium.org>
Cr-Commit-Position: refs/heads/master@{#744304}

build/android/gyp/write_build_config.py

@@ -1104,6 +1104,7 @@ def main(argv):
   if options.base_module_build_config:
     with open(options.base_module_build_config, 'r') as f:
       base_module_build_config = json.load(f)
+      all_inputs.append(options.base_module_build_config)
 
   # Initialize some common config.
   # Any value that needs to be queryable by dependents must go within deps_info.