Merge openpgp-card lib into OpenKeychain, it was already depending on OK, no need to separate

OpenKeychain/src/main/res/layout/nfc_activity.xml

@@ -0,0 +1,30 @@
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:paddingLeft="16dp"
+    android:paddingRight="16dp"
+    android:paddingTop="8dp"
+    android:paddingBottom="8dp"
+    android:background="#FFFFFFFF"
+    tools:context="org.sufficientlysecure.keychain.nfc.NfcActivityFull">
+
+    <TextView
+        android:text="Hold Yubikey against the back of your device!"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:textAppearance="@android:style/TextAppearance.Large"
+        android:id="@+id/textView"
+        android:gravity="center"
+        android:layout_gravity="center" />
+
+    <ImageView
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:id="@+id/imageView"
+        android:src="@drawable/yubikey_neo"
+        android:layout_alignParentRight="true"
+        android:layout_alignParentEnd="true"
+        android:layout_below="@+id/textView" />
+
+</RelativeLayout>