cmake: Get CPACK_PACKAGE_VERSION from git tag.

Change-Id: Iaa4ef8e346f926df52d43277d4d9c967425af54f
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/apitrace/+/2224538
Reviewed-by: Po-Hsien Wang <pwang@chromium.org>
Commit-Queue: Robert Tarasov <tutankhamen@chromium.org>
Tested-by: Robert Tarasov <tutankhamen@chromium.org>
1 file changed