gradle: set the buildConfig with =

The old way is marked as deprecated.

> Properties should be assigned using the 'propName = value' syntax. Setting a
> property via the Gradle-generated 'propName value' or 'propName(value)'
> syntax in Groovy DSL has been deprecated.

application/donations/build.gradle

@@ -71,7 +71,7 @@ android {
     namespace = 'org.videolan.vlc.donations'
     buildFeatures {
         aidl true
-        buildConfig true
+        buildConfig = true
     }
 }
 

application/live-plot-graph/build.gradle

@@ -51,7 +51,7 @@ android {
     }
     namespace = 'org.videolan.liveplotgraph'
     buildFeatures {
-        buildConfig true
+        buildConfig = true
     }
 
 }

application/moviepedia/build.gradle

@@ -50,7 +50,7 @@ android {
     }
     namespace = 'org.videolan.moviepedia'
     buildFeatures {
-        buildConfig true
+        buildConfig = true
     }
 
 }

application/remote-access-server/build.gradle

@@ -55,7 +55,7 @@ android {
         jvmTarget = '1.8'
     }
     buildFeatures {
-        buildConfig true
+        buildConfig = true
     }
 
 }

application/resources/build.gradle

@@ -54,7 +54,7 @@ android {
     }
     namespace = 'org.videolan.resources'
     buildFeatures {
-        buildConfig true
+        buildConfig = true
     }
 
 }

application/tools/build.gradle

@@ -27,7 +27,7 @@ android {
     }
     namespace = 'videolan.org.commontools'
     buildFeatures {
-        buildConfig true
+        buildConfig = true
     }
 }
 

application/vlc-android/build.gradle

@@ -122,7 +122,7 @@ android {
     buildFeatures {
         renderScript true
         aidl true
-        buildConfig true
+        buildConfig = true
     }
 }