gpu: ipu-v3: remove IRQ dance on DC channel disable
This has never worked properly, as the IRQ got retriggered immediately on unmask. Remove the IRQ wait dance, as it is apparently safe to disable the DC channel at any point in time. Signed-off-by: Lucas Stach <l.stach@pengutronix.de> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
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1762ed65
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