Fix common misspellings

Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
diff --git a/sound/pci/asihpi/asihpi.c b/sound/pci/asihpi/asihpi.c
index f53a31e..f8ccc967 100644
--- a/sound/pci/asihpi/asihpi.c
+++ b/sound/pci/asihpi/asihpi.c
@@ -963,7 +963,7 @@
 
 	/*? also check ASI5000 samplerate source
 	    If external, only support external rate.
-	    If internal and other stream playing, cant switch
+	    If internal and other stream playing, can't switch
 	*/
 
 	init_timer(&dpcm->timer);