Trivial fix, the spelling of "drescription" is incorrect
in function comment.

Fix this.
Signed-off-by: NBinbin Zhou <zhoubinbin@uniontech.com>
Acked-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com>