i2c: designware: Fix spelling typos in the comments

Fix spelling typos in the comments with help of `codespell`.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
diff --git a/drivers/i2c/busses/i2c-designware-pcidrv.c b/drivers/i2c/busses/i2c-designware-pcidrv.c
index 050adda..656206c 100644
--- a/drivers/i2c/busses/i2c-designware-pcidrv.c
+++ b/drivers/i2c/busses/i2c-designware-pcidrv.c
@@ -109,7 +109,7 @@ static int mfld_setup(struct pci_dev *pdev, struct dw_pci_controller *c)
 static int mrfld_setup(struct pci_dev *pdev, struct dw_pci_controller *c)
 {
 	/*
-	 * On Intel Merrifield the user visible i2c busses are enumerated
+	 * On Intel Merrifield the user visible i2c buses are enumerated
 	 * [1..7]. So, we add 1 to shift the default range. Besides that the
 	 * first PCI slot provides 4 functions, that's why we have to add 0 to
 	 * the first slot and 4 to the next one.