mei: revamp interrupt thread handlers

1. Use common prefix mei_cl_irq_ and common parameter list
for client handlers.
2. Update function kdocs

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --cc drivers/misc/mei/amthif.c
Simple merge

diff --cc drivers/misc/mei/interrupt.c
Simple merge

diff --cc drivers/misc/mei/mei_dev.h
Simple merge