Add hostgraphics classes required for ImageReader

Bug: 117921091
Test: all tests should pass
Change-Id: I5d60a1177d43eb8dec08403cf34936007b8a267f
(cherry picked from commit c1409f44f82313902a690fb257ee271dc16385a0)
diff --git a/libs/hostgraphics/Android.bp b/libs/hostgraphics/Android.bp
index aedb752..e713b98 100644
--- a/libs/hostgraphics/Android.bp
+++ b/libs/hostgraphics/Android.bp
@@ -1,8 +1,15 @@
 cc_library_host_static {
     name: "libhostgraphics",
 
+    cflags: [
+        "-Wno-unused-parameter",
+    ],
+
     srcs: [
         ":libui_host_common",
+        "Fence.cpp",
+        "HostBufferQueue.cpp",
+        "PublicFormat.cpp",
     ],
 
     include_dirs: [