Fix common misspellings

Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
diff --git a/drivers/usb/wusbcore/rh.c b/drivers/usb/wusbcore/rh.c
index c175b73..39de390 100644
--- a/drivers/usb/wusbcore/rh.c
+++ b/drivers/usb/wusbcore/rh.c
@@ -133,7 +133,7 @@
  *           big of a problem [and we can't make it an spinlock
  *           because other parts need to take it and sleep] .
  *
- *           @usb_hcd is refcounted, so it won't dissapear under us
+ *           @usb_hcd is refcounted, so it won't disappear under us
  *           and before killing a host, the polling of the root hub
  *           would be stopped anyway.
  */