Add a new image for the overlay of Safety and Regulatory manual

Sunfish has a new image for Safety and Regulatory manual update, we
have to create a new empty image in SafetyRegulatoryInfo for overlay,
otherwise the new image is not able to show on the regulatory manual
page successfully.

Test: visual
Bug: 169245990
Change-Id: Ic8d853cdfec69e54cf851c6b77a6027c2feb946d
diff --git a/res/raw/image12.png b/res/raw/image12.png
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/res/raw/image12.png