ipc_logging: Fix coding style

The coding style of the IPC Logging extraction script is not compliant
with the Python coding style guide (PEP 0008). In order to be merged
into the Linux Ram Dump Parser, the code must be made compliant with PEP
0008.

Bring the code into compliance with PEP 0008.

Change-Id: Idf587a55670a5b30c7668c78b1625100d6128c9c