Merge series from Cezary Rojewski <cezary.rojewski@intel.com>:
Entire patchset provides no new features and does not alter the code
from functional (user) perspective.
The first two improve IPC-error logging 'mechanism' and align the
catpt-driver with what's done in another Intel's driver: the avs-driver.
In essence, no need to log the error in every function, let the common
handler do so instead.
The last three simplify the code, and fix some spacing issues. All in
all, we get better readability with lower LOC.