Add STM32L422CBx devices
This merge request contains the devices STM32L422CBTx and STM32L422CBUx.
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Remove the instructional content of this template -
Provide a URL to a datasheet for the symbol(s) you are contributing
https://www.st.com/resource/en/datasheet/stm32l422cb.pdf
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An example screenshot image is very helpful
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Ensure that the associated footprints match the official footprint library - A new fitting footprint must be submitted if the library does not yet contain one.
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If there are matching footprint PRs, provide link(s) as appropriate -
Check the output of the automated check scripts - fix any errors as required -
Give a reason behind any intentional library convention rule violation.