dmaengine: pl330: Convert to the *_late and *_early system sleep callbacks

dmaengine: pl330: Convert to the *_late and *_early system sleep callbacks

It has turned out that it's in general a good idea for dmaengines to allow
DMA requests during the entire dpm_suspend() phase. Therefore, convert the
pl330 driver into using SET_LATE_SYSTEM_SLEEP_PM_OPS.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Link: https://lore.kernel.org/r/20191205143746.24873-3-ulf.hansson@linaro.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>