Fix "const-class v0, I" for libartd.so

This CL fixes the verification of "const-class v0, I"
by adding HasClassVirtual() to PrimitiveType.

Without this CL, the DCHECK for HasClass() in RegType::GetClass()
will raise an assertion failure, since the verifier is trying to get
the class object for the dex cache.

This issue can be reproduced by running the CTS
dot.junit.opcodes.const_class.Main_testN2 with libartd.so.

Change-Id: I605a3fcf7dd9d63e1f739fbb3153d0367911bb3e