SMP: Set affinity for idle tasks #2951

Job	Run time
WIN32 MingW	3m 10s
WIN32 MSVC	3m 22s
Native GCC (ubuntu-latest)	1m 41s
Native GCC (macos-latest)	2m 19s
GCC MicroBlaze Toolchain	5m 11s
GNU MSP430 Toolchain	1m 53s
CMake Example with Native GCC	31s
GNU ARM Toolchain	1m 51s
	19m 58s

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