dmaengine: fsl-edma: clean up unused "fsl,imx8qm-adma" compatible string

The eDMA hardware issue only exist imx8QM A0. A0 never mass production.
So remove the workaround safely.

Signed-off-by: Joy Zou <joy.zou@nxp.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Link: https://lore.kernel.org/r/20240424064508.1886764-2-joy.zou@nxp.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>