CameraNDK: add API to list all tags in metadata

Bug: 27102995
Change-Id: I2807b94867f7ed32585afedbbff0a77a93c8fe94
diff --git a/camera/ndk/Android.mk b/camera/ndk/Android.mk
index ebd473d..40dbeef 100644
--- a/camera/ndk/Android.mk
+++ b/camera/ndk/Android.mk
@@ -49,6 +49,7 @@
     libcamera_client \
     libstagefright_foundation \
     libcutils \
+    libcamera_metadata
 
 LOCAL_CLANG := true