Move SoftwareSerial TX and RX pin setup from constructor to begin

[sandeepmistry]

As suggested in #3041.

[NicoHood]

The functions are used only once. You can inline them. Via moving the code or similar to the fix you added yesterday (always inline in header declaration).

[Chris--A]

Also would possibly resolve: https://github.com/arduino/Arduino/issues/4752

[ArduinoBot]

✅ Build completed.

Please test this code using one of the following:

⬇️ http://downloads.arduino.cc/javaide/pull_requests/arduino-PR-4092-BUILD-651-linux32.tar.xz
⬇️ http://downloads.arduino.cc/javaide/pull_requests/arduino-PR-4092-BUILD-651-linux64.tar.xz
⬇️ http://downloads.arduino.cc/javaide/pull_requests/arduino-PR-4092-BUILD-651-windows.zip
⬇️ http://downloads.arduino.cc/javaide/pull_requests/arduino-PR-4092-BUILD-651-macosx.zip
⬇️ http://downloads.arduino.cc/javaide/pull_requests/arduino-PR-4092-BUILD-651-linuxarm.tar.xz

ℹ️ The linuxarm build is still experimental and may not be always available.

[Humancell]

Is there a reason this has not yet been rolled into the released code? Or how can I assist in making this happen? It would be extremely useful in numerous projects that I'm working on.

Thanks!

[CLAassistant]

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