Add another boot passphrase entry needle variant for F25

The F25 'desktopencrypt' images built by createhdds boot to a
console passphrase entry screen, not graphical. F24 images
built the same way boot to a graphical passphrase entry screen.
I'm not sure why, but it's not really worth spending a lot of
energy on, I don't think - let's just add a needle to cover
this case.

needles/console/boot_enter_passphrase-20161221.json

@@ -0,0 +1,15 @@
+{
+  "tags": [
+    "boot_enter_passphrase"
+  ],
+  "properties": [],
+  "area": [
+    {
+      "width": 207,
+      "type": "match",
+      "height": 31,
+      "xpos": 0,
+      "ypos": 169
+    }
+  ]
+}