Correct UseHmacKey parameter

HMAC key was created with Digest(Digest::SHA_2_256) which is missing in
the UseHmacKey function

Bug: 152932473
Test: VtsHalKeymasterV4_1TargetTest
Change-Id: If63dd197fe12172e14be9890ab07a00c3eef4a4c
1 file changed