tree 8e95246b0b5478a5fb5bf65dac63029a78d6c267
parent 0ef7a678ffd48ca9c5a18f198574879f5c7f0edf
author Justin Yun <justinyun@google.com> 1500877184 +0900
committer Justin Yun <justinyun@google.com> 1502465425 +0900

libpng is not allowed to vendor

libpng was vndk-sp because libft2 was vndksp and linked with it.
However, libpng is now framework-only library since libft2 is changed
to ll-ndk.

Bug: 63866913
Test: build and boot with BOARD_VNDK_VERSION=current
Change-Id: I2217c50e51aef88a587471e76af537c22725cac6