Reland "camera ndk: Add ACameraMetadata_getTagFromName to the ndk"

This reverts commit 45a66e86.

Bug: 327254006

Take2: build failures on branches with PLATFORM_VERSION < 15 shouldn't
       exist after aosp/2999516 is submitted

Test: build

Change-Id: Ib190b17d601ddcc7fb39943b230ce9569c274ea8
Signed-off-by: Jayant Chowdhary <jchowdhary@google.com>