liblog: enable windows builds in soong

Change-Id: I426cdebeddf653bf2daacb3e0724516ac78756cb
diff --git a/liblog/Android.bp b/liblog/Android.bp
index 34e7f92..878feb8 100644
--- a/liblog/Android.bp
+++ b/liblog/Android.bp
@@ -52,6 +52,7 @@
         },
         windows: {
             srcs: ["uio.c"],
+            enabled: true,
         },
         not_windows: {
             srcs: ["event_tag_map.c"],