mei: don't use wake_up_interruptible for wr_ctrl

wr_ctrl waiters are none interruptible, so should be waken up
with call to wake_up and not to wake_up_interruptible.

This fixes commit:
7ff4bdd4 ("mei: fix waiting for wr_ctrl for corner cases.")

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