PCI: qcom: Clean up ASPM comment

Break up the newly added ASPM comment so that it fits within the soft 80
character limit and becomes more readable.

Link: https://lore.kernel.org/r/20231128081512.19387-5-johan+linaro@kernel.org


Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>