pcr.c: Add unit tests for pcr_parse_selections
pcr.c: Add unit tests for pcr_parse_selections

Signed-off-by: pengchen-zpc <57411fb353fa4e49f712f7f33f824d7af48303c7@alibaba-inc.com>

01org/tpm2.0-tools,01org/tpm2.0-tools,01org/tpm2.0-tools