- remove custom debug and tracing functions
- rework comments and function headers(also coding style)
- replace all semaphores with mutexes or completions
+- Move handling for each individual members of 'union message_body' out
+ into a separate 'struct work_struct' and completely remove the multiplexer
+ that is currently part of host_if_work(), allowing movement of the
+ implementation of each message handler into the callsite of the function
+ that currently queues the 'host_if_msg'.
- make spi and sdio components coexist in one build
- turn compile-time platform configuration (BEAGLE_BOARD,
PANDA_BOARD, PLAT_WMS8304, PLAT_RKXXXX, CUSTOMER_PLATFORM, ...)