Fix common misspellings

Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
diff --git a/arch/blackfin/Kconfig.debug b/arch/blackfin/Kconfig.debug
index acb8379..2641731 100644
--- a/arch/blackfin/Kconfig.debug
+++ b/arch/blackfin/Kconfig.debug
@@ -59,7 +59,7 @@
           be reported multiple cycles after the error happens. This delay
 	  can cause the wrong application, or even the kernel to receive a
 	  signal to be killed. If you are getting HW errors in your system,
-	  try turning this on to ensure they are at least comming from the
+	  try turning this on to ensure they are at least coming from the
 	  proper thread.
 
 	  On production systems, it is safe (and a small optimization) to say N.