GHA: add a description for build_android input

This makes the options more similar by providing a description rather
than relying on the user to know what the input variable is meant for.

Author: compnerd

.github/workflows/build-toolchain.yml

@@ -43,6 +43,7 @@ on:
         required: false
 
       build_android:
+        description: 'Build Android SDK'
         required: false
         default: false
         type: boolean
@@ -114,6 +115,7 @@ on:
         type: string
 
       build_android:
+        description: 'Build Android SDK'
         required: false
         default: false
         type: boolean