soc: intel_adsp: Change loop time in adsplog.py

When build and run the tests manually with west, we could
build successfully, but can not get output after flashing.
It should rely on adsplog.py to get output,
and the cause is loop time too short to get output.
So, we change the loop time back to 1.

Signed-off-by: Lixin Guo <lixinx.guo@intel.com>