debug: thread_analyzer: Option to analyze threads on each core separately

Add implementation to analyze threads on each cpu separately. This
feature can be enabled with THREAD_ANALYZER_AUTO_SEPARATE_CORES Kconfig
option. If enabled, an analyzer thread is started for each cpu, and
the threads will only analyze thread on the cpu its running on.

This feature is needed for Intel ADSP platform, where cpu specific
caches are not synchronized between the cpu. It is also probably
needed by other platforms having CONFIG_KERNEL_COHERENCE=y, so default
to THREAD_ANALYZER_AUTO_SEPARATE_CORES=y for those platform.

Signed-off-by: Jyri Sarha <jyri.sarha@linux.intel.com>