tools/tpm2_policynvwritten: add support for calculating cpHash

[ccihula]

[codecov[bot]]

Codecov Report

Merging #3105 (a408243) into master (0a09ffc) will increase coverage by 0.01%. The diff coverage is 83.33%.

@@            Coverage Diff             @@
##           master    #3105      +/-   ##
==========================================
+ Coverage   76.41%   76.42%   +0.01%     
==========================================
  Files         172      172              
  Lines       22668    22723      +55     
==========================================
+ Hits        17321    17366      +45     
- Misses       5347     5357      +10     

Impacted Files	Coverage Δ
lib/tpm2.c	73.54% <72.41%> (-0.04%)	:arrow_down:
tools/tpm2_policynvwritten.c	71.95% <89.58%> (+10.84%)	:arrow_up:
lib/tpm2_policy.c	80.18% <100.00%> (ø)

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[idesai]

Closed with #3133