[ENHANCEMENT] adjust structs with device properties - code improvement

[ktanska]

Description

Structs which contain device properties should be adjusted (now, they contain different way of keeping the same information - already allocated in struct or needs to be allocated before use).
sysfs_path as an example: char* in struct block_device, but char[] in struct cntrl_device.
It is just a quality improvement, I don't know about any defect caused by it.

Reason

No response

Environment

No response