PCI: Fix typos

Fix typos.

Signed-off-by: Bjorn Helgaas <[e-mail]>
Acked-by: Thomas Gleixner <[e-mail]>
Link: https://patch.msgid.link/[e-mail]

drivers/pci/controller/pcie-brcmstb.c

···
 	 *
 	 * The PCIe host controller by design must set the inbound viewport to
 	 * be a contiguous arrangement of all of the system's memory.  In
-	 * addition, its size mut be a power of two.  To further complicate
+	 * addition, its size must be a power of two.  To further complicate
 	 * matters, the viewport must start on a pcie-address that is aligned
 	 * on a multiple of its size.  If a portion of the viewport does not
 	 * represent system memory -- e.g. 3GB of memory requires a 4GB

drivers/pci/msi/msi.c

···
 	/*
 	 * This is a horrible hack, but short of implementing a PCI
 	 * specific interrupt chip callback and a huge pile of
-	 * infrastructure, this is the minor nuissance. It provides the
+	 * infrastructure, this is the minor nuisance. It provides the
 	 * protection against concurrent operations on this entry and keeps
 	 * the control word cache in sync.
 	 */

drivers/pci/pcie/ptm.c

···
 	if (!ops->check_capability)
 		return NULL;
 
-	/* Check for PTM capability before creating debugfs attrbutes */
+	/* Check for PTM capability before creating debugfs attributes */
 	ret = ops->check_capability(pdata);
 	if (!ret) {
 		dev_dbg(dev, "PTM capability not present\n");