host: Remove support for multithreading

Merged Darryl Green requested to merge github/fork/CJKay/host-st into master

Created by: CJKay

The current host architecture supports a custom CMSIS-RTOS2 layer that interfaces with the host system implementation of pthreads.

Given the host product can now be run in single-threaded mode, the extra maintenance required to keep the multi-threaded version functioning is prohibitive, especially with frequent changes to the framework.

This commit switches the host product's fw firmware to single-threaded mode, and removes support for building the host architecture in multi-threaded mode.

Change-Id: I59a7db0eb0f2bb70614c1fe4aca3f482662976f3 Signed-off-by: Chris Kay chris.kay@arm.com

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