samsung krait: add msm8974 to build barrier

Change-Id: I61adb916c5091f4f9fb30e1078067f27458974b0
Revert "samsung krait: add msm8974 to build barrier"

This reverts commit 0bfe4c57d1b12e14bef31f49b8dc775f2c2c726a.

Change-Id: I08d89dee28ed0bb779dd7519de2b566dfb02158c