Update SMC2 entry and add SMC3 entry

[AlbertHuang-CPU]

No description provided.

[thorstendb-ARM]

LGTM, but please also update EnumStringTables.h:
CPUTYPE(SMC3 , "SMC3" )

Please also update tools/svdconv/SVDModel/include/EnumStringTables.h for MC3, this is why we get the massice errors.

[github-actions]

Test Results

 6 files  12 suites   0s ⏱️
28 tests 28 ✅ 0 💤 0 ❌
84 runs  84 ✅ 0 💤 0 ❌

Results for commit 9adaafb.

♻️ This comment has been updated with latest results.

[thorstendb-ARM]

LGTM

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 66.22%. Comparing base (d327733) to head (9adaafb).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2255   +/-   ##
=======================================
  Coverage   66.22%   66.22%           
=======================================
  Files         181      181           
  Lines       36287    36277   -10     
  Branches    22505    22496    -9     
=======================================
- Hits        24031    24026    -5     
- Misses       7674     7677    +3     
+ Partials     4582     4574    -8     

Flag	Coverage Δ
svdconv-cov	40.28% <ø> (ø)

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Files with missing lines	Coverage Δ
tools/svdconv/SVDModel/src/SvdTypes.cpp	44.82% <ø> (ø)

... and 6 files with indirect coverage changes

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