HID: intel-ish-hid: ipc: change timed_wait_for_timeout() to be a function

The macro timed_wait_for_timeout() only be used in one function, so move
this marco from header file and change it to a function in ipc.c, where
it is used.

Signed-off-by: Even Xu <even.xu@intel.com>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>