coredump: Intel ADSP memory window backend

For debug usage is added backend for memory window.
Coredump is being dumped in raw data. It needs to be converted to
ACSII for later analysis. Data is written to telemetry slot
in memory window which is a space where is located all debbug
information.

Signed-off-by: PawelX Dobrowolski <pawelx.dobrowolski@intel.com>