device: Add second generation HomePod

[postlund]

Fixes #2060

[codecov]

Codecov Report

Patch coverage: 100.00% and no project coverage change.

Comparison is base (51dffc9) 88.81% compared to head (51f11d7) 88.82%.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #2061   +/-   ##
=======================================
  Coverage   88.81%   88.82%           
=======================================
  Files         163      163           
  Lines       10839    10841    +2     
=======================================
+ Hits         9627     9629    +2     
  Misses       1212     1212           

Impacted Files	Coverage Δ
pyatv/convert.py	100.00% <ø> (ø)
pyatv/support/device_info.py	100.00% <ø> (ø)
pyatv/const.py	100.00% <100.00%> (ø)

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