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/rtlwifi/wifi.h b/drivers/net/wireless/rtlwifi/wifi.h
index 01226f8..07db95f 100644
--- a/drivers/net/wireless/rtlwifi/wifi.h
+++ b/drivers/net/wireless/rtlwifi/wifi.h
@@ -1555,7 +1555,7 @@
 
 
 /***************************************
-    Bluetooth Co-existance Related
+    Bluetooth Co-existence Related
 ****************************************/
 
 enum bt_ant_num {