spi: spidev: Fix typo

Fix the typo in "compatible".

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
diff --git a/drivers/spi/spidev.c b/drivers/spi/spidev.c
index dd616ff..9d8841e 100644
--- a/drivers/spi/spidev.c
+++ b/drivers/spi/spidev.c
@@ -708,7 +708,7 @@
 
 	/*
 	 * spidev should never be referenced in DT without a specific
-	 * compatbile string, it is a Linux implementation thing
+	 * compatible string, it is a Linux implementation thing
 	 * rather than a description of the hardware.
 	 */
 	if (spi->dev.of_node && !of_match_device(spidev_dt_ids, &spi->dev)) {