Add back keymaster@4.0 hash.

This was changed after this branch was released. The originally
released hash needs to be restored since that is what partners
are building with.

Bug: 112688384
Bug: 78104779
Test: m android.hardware.keymaster@4.0 (tests hashes)
Change-Id: I0f59a493d7f17a13402d992495d1a259f6257077
(cherry picked from commit ec720564)