dmaengine: dw-edma: Fix to enable to issue dma request on DMA processing

stable inclusion
from stable-v5.10.180
commit 4f6303fd8f907adf4785aaeb6f62e470115f1901
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I8FC2O

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=4f6303fd8f907adf4785aaeb6f62e470115f1901



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[ Upstream commit 970b17df ]

The issue_pending request is ignored while driver is processing a DMA
request. Fix to issue the pending requests on any dma channel status.

Fixes: e63d79d1 ("dmaengine: Add Synopsys eDMA IP core driver")
Signed-off-by: Shunsuke Mie <mie@igel.co.jp>
Link: https://lore.kernel.org/r/20230411101758.438472-2-mie@igel.co.jp


Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: sanglipeng <sanglipeng1@jd.com>