device.h: Fix warnings for mismatched parameter names in comments

Fix the warnings for parameter named as "driver" instead of the actual "drv"
in the comments as reported by the kbuild robot.

Reported-by: kbuild test robot <lkp@intel.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Link: https://lore.kernel.org/r/20190809102033.28463-1-suzuki.poulose@arm.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>