spi: atmel-quadspi: Fix wrong register value written to MR

aq->mr should go to MR, nothing else.

Fixes: 329ca3e ("spi: atmel-quadspi: Avoid overwriting delay register settings")
Signed-off-by: Alexander Dahl <[email protected]>
Link: https://lore.kernel.org/linux-spi/[email protected]/T/#u
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Mark Brown <[email protected]>

Author: LeSpocky

drivers/spi/atmel-quadspi.c

@@ -377,7 +377,7 @@ static int atmel_qspi_set_cfg(struct atmel_qspi *aq,
 	 */
 	if (!(aq->mr & QSPI_MR_SMM)) {
 		aq->mr |= QSPI_MR_SMM;
-		atmel_qspi_write(aq->scr, aq, QSPI_MR);
+		atmel_qspi_write(aq->mr, aq, QSPI_MR);
 	}
 
 	/* Clear pending interrupts */