Set CVR qualifiers in QualifiedTypeIR.

CVR qualifiers were not being set when reading in protobuf into IR. Set
them now.

Bug: 63865902

Test: mm -j64 with built tool used in soong.

Test: tests/test.py; all tests pass.

Change-Id: I7af734f53a056e68840d7f6d920e485e25428371
1 file changed