Fix common misspellings

Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
diff --git a/include/sound/hdspm.h b/include/sound/hdspm.h
index 1774ff5..1f59ea2 100644
--- a/include/sound/hdspm.h
+++ b/include/sound/hdspm.h
@@ -193,7 +193,7 @@
  * 32768 Bytes
  */
 
-/* organisation is 64 channelfader in a continous memory block */
+/* organisation is 64 channelfader in a continuous memory block */
 /* equivalent to hardware definition, maybe for future feature of mmap of
  * them
  */