Add TAG_MAC_LENGTH to EncryptionOperationsTest.AesWrongPurpose

Without the setting of TAG_MAC_LENGTH, the test fails due to
MISSING_MAC_PURPOSE.

Bug: 145626599
Test: VtsHalKeymasterV4_0TargetTest
Change-Id: Ic58411b86e07dfeeb78211abf9271ee995beabc9
1 file changed