vendor.lattice_ecp5: Support internal oscillator (OSCG)

[nmigen-issue-migration]

Issue by miek
Friday Jan 17, 2020 at 17:06 GMT
Originally opened as m-labs/nmigen#306

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miek included the following code: https://github.com/m-labs/nmigen/pull/306/commits

[nmigen-issue-migration]

Comment by codecov[bot]
Friday Jan 17, 2020 at 17:08 GMT

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Codecov Report

Merging #306 into master will decrease coverage by 0.07%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #306      +/-   ##
==========================================
- Coverage   82.17%   82.09%   -0.08%     
==========================================
  Files          34       34              
  Lines        5643     5652       +9     
  Branches     1161     1161              
==========================================
+ Hits         4637     4640       +3     
- Misses        853      861       +8     
+ Partials      153      151       -2

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[whitequark]

Merged with minor stylistic modifications.