Fix common misspellings

Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
diff --git a/drivers/net/wireless/b43legacy/b43legacy.h b/drivers/net/wireless/b43legacy/b43legacy.h
index c81b2f5..23583be 100644
--- a/drivers/net/wireless/b43legacy/b43legacy.h
+++ b/drivers/net/wireless/b43legacy/b43legacy.h
@@ -488,7 +488,7 @@
 	/* Current Interference Mitigation mode */
 	int interfmode;
 	/* Stack of saved values from the Interference Mitigation code.
-	 * Each value in the stack is layed out as follows:
+	 * Each value in the stack is laid out as follows:
 	 * bit 0-11:  offset
 	 * bit 12-15: register ID
 	 * bit 16-32: value