[TF-M] TFM_PSA_API =>BusFault

Hello,

After last commits on TFM master branch, when TFM_PSA_API is defined, the tfm examples finish in main()=>tfm_spm_init()=>....=> tfm_thrd_context_switch()=>tfm_memcpy()=>BusFault_Handler(). When TFM_PSA_API is not defined, everything is OK. Also, TFM examples were OK at least 2 weeks ago, even when TFM_PSA_API was defined.

Is it known issue? Or something new (during last week) must be added into our target-specific code?

Thanks, Andrej Butok