Add a javadoc_library for android/support

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=147747467

Author: ronshapiro

BUILD

@@ -64,6 +64,7 @@ javadoc_library(
     srcs = [
         "//core/src/main/java/dagger:javadoc-srcs",
         "//java/dagger/android:android-srcs",
+        "//java/dagger/android/support:support-srcs",
         "//producers:producers-srcs",
     ],
     android_api_level = 25,

java/dagger/android/support/BUILD

@@ -19,6 +19,11 @@ package(default_visibility = ["//:src"])
 
 load("//:build_defs.bzl", "JAVA_6_SOURCE_LEVEL", "PRE_JAVA_8_INFERENCE_OPTS")
 
+filegroup(
+    name = "support-srcs",
+    srcs = glob(["*.java"]),
+)
+
 android_library(
     name = "support",
     srcs = glob(["*.java"]),
@@ -32,3 +37,13 @@ android_library(
         "@androidsdk//com.android.support:support-v4-25.0.0",
     ],
 )
+
+load("//tools:javadoc.bzl", "javadoc_library")
+
+javadoc_library(
+    name = "support-javadoc",
+    srcs = [":support-srcs"],
+    android_api_level = 25,
+    root_packages = ["dagger.android.support"],
+    deps = [":support"],
+)