Add dependancy to libbase for libhostgraphics

The dependancy is required for the to_string function
which is now defined in Rect.cpp.

Bug: 161793589
Bug: 160404780
Test: m libhostgraphics
Change-Id: Id071c207b5344e36c992f3a095c42a5f135c86d4

libs/hostgraphics/Android.bp

@@ -5,6 +5,10 @@ cc_library_host_static {
         "-Wno-unused-parameter",
     ],
 
+    static_libs: [
+        "libbase",
+    ],
+
     srcs: [
         ":libui_host_common",
         "Fence.cpp",
@@ -28,4 +32,4 @@ cc_library_host_static {
             enabled: true,
         }
     },
-}
+}