tree 1a78cad664f8986c391724132b36f41cb0e05a8a
parent 5e7cfaed369ff335b44ebda69e15061a663b5584
author Kévin Redon <kredon@sysmocom.de> 1556803066 +0200
committer Kévin Redon <kredon@sysmocom.de> 1557409598 +0200

add function to set baudrate

it will set the GCLK as SERCOM core clock with the lowest baud
rate error and set the closest baud rate in the SERCOM peripheral.

Change-Id: I01db273f4c8170a4942049653c575010b93296ce