PCI/MSI: Fix typos in <linux/msi.h>

Fix two comment typos in the <linux/msi.h> header.
Signed-off-by: NThomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>

include/linux/msi.h

@@ -186,7 +186,7 @@ struct msi_domain_info;
  * @msi_free:		Domain specific function to free a MSI interrupts
  * @msi_check:		Callback for verification of the domain/info/dev data
  * @msi_prepare:	Prepare the allocation of the interrupts in the domain
- * @msi_finish:		Optional callbacl to finalize the allocation
+ * @msi_finish:		Optional callback to finalize the allocation
  * @set_desc:		Set the msi descriptor for an interrupt
  * @handle_error:	Optional error handler if the allocation fails
  *
@@ -194,7 +194,7 @@ struct msi_domain_info;
  * msi_create_irq_domain() and related interfaces
  *
  * @msi_check, @msi_prepare, @msi_finish, @set_desc and @handle_error
- * are callbacks used by msi_irq_domain_alloc_irqs() and related
+ * are callbacks used by msi_domain_alloc_irqs() and related
  * interfaces which are based on msi_desc.
  */
 struct msi_domain_ops {