Update to DNG SDK 1.7.1 2502

Test: make
Flag: EXEMPT BUGFIX
Cherrypick-From: https://googleplex-android-review.googlesource.com/q/commit:51fac39e7e2a05b2c5fa54108035d0140a5bc86c
Bug: 491543354
Cherrypick-From: https://googleplex-android-review.googlesource.com/q/commit:3a02f977b587dd1f00aee6a38f557ac86bb7d846
Merged-In: I98050384600e0f4ac77f4378e00eee9be4830aa7
Change-Id: I98050384600e0f4ac77f4378e00eee9be4830aa7
11 files changed