spi: dw-pci: Spelling s/paltforms/platforms/g

Signed-off-by: Geert Uytterhoeven <[e-mail]>
Signed-off-by: Mark Brown <[e-mail]>

drivers/spi/spi-dw-pci.c

···
 	dws->irq = pdev->irq;
 
 	/*
-	 * Specific handling for paltforms, like dma setup,
+	 * Specific handling for platforms, like dma setup,
 	 * clock rate, FIFO depth.
 	 */
 	if (desc) {