Damien George 97072b7224 esp32: Add explicit initialisers to silence compiler warnings.
This makes no functional change.  See similar commit
9aa58cf8bac353297ff5e7b4f3331e5618046095

Signed-off-by: Damien George <damien@micropython.org>
2021-02-15 16:37:58 +11:00
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