libselinux is dynamically linked from init

init is now dynamically linked to libselinux. This gives us about 100KB
extra space, which is valuable in the recovery partition.

Bug: 63673171
Test: m -j
Test: adb reboot recovery
Change-Id: I72c4f886cbbb9ce54f8221f05547f5b9f0e1adb0
diff --git a/init/Android.bp b/init/Android.bp
index 7d863c8..cf7637f 100644
--- a/init/Android.bp
+++ b/init/Android.bp
@@ -76,7 +76,6 @@
         "libprotobuf-cpp-lite",
         "libpropertyinfoserializer",
         "libpropertyinfoparser",
-        "libselinux",
     ],
     shared_libs: [
         "libcutils",
@@ -87,6 +86,7 @@
         "libc++",
         "libdl",
         "libz",
+        "libselinux",
     ],
 }