intel_adsp: ace: power: Prevent HST domain power gating

This patch introduces power management for the HOST (HST) domain within
the Intel ADSP ACE IP. It adds macros to access the node identifier and
device pointer for the HST power domain and integrates power management
calls into the system initialization and power state transition
functions.

The patch ensures that power gating of the HST domain is prevented when
the primary core of the audio DSP is active. Preventing power gating is
crucial for maintaining the functionality of the HST domain while the
primary DSP core is performing critical tasks.

Signed-off-by: Tomasz Leman <tomasz.m.leman@intel.com>