spi: qup: replace spin_lock_irqsave by spin_lock in hard IRQ

The code has been in a irq-disabled context since it is hard IRQ. There
is no necessity to do it again.

Signed-off-by: Xingbang Liu <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Mark Brown <[e-mail]>

drivers/spi/spi-qup.c

···
 {
 	struct spi_qup *controller = dev_id;
 	u32 opflags, qup_err, spi_err;
-	unsigned long flags;
 	int error = 0;
 
 	qup_err = readl_relaxed(controller->base + QUP_ERROR_FLAGS);
···
 		error = -EIO;
 	}
 
-	spin_lock_irqsave(&controller->lock, flags);
+	spin_lock(&controller->lock);
 	if (!controller->error)
 		controller->error = error;
-	spin_unlock_irqrestore(&controller->lock, flags);
+	spin_unlock(&controller->lock);
 
 	if (spi_qup_is_dma_xfer(controller->mode)) {
 		writel_relaxed(opflags, controller->base + QUP_OPERATIONAL);