The description lacks a few indefinite articles when reading and as a
result is a bit clunky to read. Introduce a few indefinite articles to
appease the grammar gods.

Cc: Andrzej Hajda <a.hajda@samsung.com>
Cc: Rob Herring <robh@kernel.org>
Cc: Chanwoo Choi <cw00.choi@samsung.com>
Cc: linux-usb@vger.kernel.org
Cc: devicetree@vger.kernel.org
Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Link: https://lore.kernel.org/r/20191128134358.3880498-3-bryan.odonoghue@linaro.orgSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>