Fix PN532 UART support + macOS support#633

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samyk wants to merge 9 commits intonfc-tools:masterfrom samyk:master

+57-2

Commits on Jan 17, 2021

Commits on Jan 18, 2021

Error out on uart_send_single if any byte fails tx
samyk
committed

Commits on Jan 22, 2021

Revert changes except for macOS where we still delay
samyk
committed