[DO NOT MERGE] Update to CMSIS 5.5.0

[sandeepmistry]

Depends on arduino/ArduinoModule-CMSIS#3.

@cmaglie @facchinm what do you think about update CMSIS from 4.5 to 5.5?

[ArduinoBot]

✅ Build completed.

⬇️ Build URL: http://downloads.arduino.cc/PR/samd/package_samd-b201_index.json

ℹ️ To test this build:

1. Open the Preferences of the Arduino IDE.
2. Add the Build URL above in the Additional Boards Manager URLs field, and click OK.
3. Open the Boards Manager (menu Tools->Board->Board Manager...)
4. Install Arduino SAMD core - Pull Request [DO NOT MERGE] Update to CMSIS 5.5.0 #392
5. Select one of the boards under SAMD Pull Request [DO NOT MERGE] Update to CMSIS 5.5.0 #392 in Tools->Board menu
6. Compile/Upload as usual

[sandeepmistry]

I'm getting linker errors when trying to use NN functions, they are not pre-compiled like the DSP.

[facchinm]

@sandeepmistry do you think they are not precompiled because they use some features not commonly deployed across a microarchitecture family? In that case the only thing I can think about is turning them into Arduino libraries (which is bad, but not terrible, since CMSIS changes are in sync with the core)

[ArduinoBot]

✅ Build completed.

⬇️ Build URL: http://downloads.arduino.cc/PR/samd/package_samd-b205_index.json

ℹ️ To test this build:

1. Open the Preferences of the Arduino IDE.
2. Add the Build URL above in the Additional Boards Manager URLs field, and click OK.
3. Open the Boards Manager (menu Tools->Board->Board Manager...)
4. Install Arduino SAMD core - Pull Request [DO NOT MERGE] Update to CMSIS 5.5.0 #392
5. Select one of the boards under SAMD Pull Request [DO NOT MERGE] Update to CMSIS 5.5.0 #392 in Tools->Board menu
6. Compile/Upload as usual

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