Clarify license terms for Romain Guy's artwork.

As discussed with Romain Guy in the email thread, the Apache 2.0
license applies to the affected .jpg files now and retroactively from
the time of import.

The image was altered using the exiftool:

exiftool -WebStatement=http://www.apache.org/licenses/LICENSE-2.0 \
    -UsageTerms='Apache License Version 2.0'

Change-Id: I8b383bc8060e0e11fbebb6be7b8730a9a6a7e0b1
diff --git a/overlay/frameworks/base/core/res/res/drawable-hdpi/default_wallpaper.jpg b/overlay/frameworks/base/core/res/res/drawable-hdpi/default_wallpaper.jpg
index 811149b..99ce569 100644
--- a/overlay/frameworks/base/core/res/res/drawable-hdpi/default_wallpaper.jpg
+++ b/overlay/frameworks/base/core/res/res/drawable-hdpi/default_wallpaper.jpg
Binary files differ