Add an exception for QTI SM8550

SM8550 doesn't support Keymint2.0, per the discussion in b/
add an exception in the test case when SM8550 is detected.

Bug: b/245649355
Test: VtsHalKeymasterV4_0TargetTest

Change-Id: I788a80c0f9b011f73aac9a8c4774e70e203ac3d6