Fix ipsec filegroups to match package structure

The current structure excludes IKE API sources from the documentation,
because soong cannot determine the correct package name.

Test: inspect api-versions.xml
Change-Id: Ia0ab05f916f6e65521143ca9bc314258a5250127
diff --git a/Android.bp b/Android.bp
index ae7b046..c470531 100644
--- a/Android.bp
+++ b/Android.bp
@@ -74,14 +74,14 @@
 filegroup {
     name: "ike-srcs",
     srcs: [
-        "src/java/**/*.java",
+        ":ike-internal-srcs",
         ":framework-ike-shared-srcs",
     ],
 }
 
 filegroup {
-    name: "ike-api-srcs",
-    srcs: ["src/java/android/**/*.java"],
+    name: "ike-internal-srcs",
+    srcs: ["src/java/**/*.java"],
     path: "src/java/",
 }