Fix common misspellings

Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
diff --git a/drivers/sfi/sfi_core.c b/drivers/sfi/sfi_core.c
index 04113e5..1e824fb 100644
--- a/drivers/sfi/sfi_core.c
+++ b/drivers/sfi/sfi_core.c
@@ -515,7 +515,7 @@
 }
 
 /*
- * The reason we put it here becasue we need wait till the /sys/firmware
+ * The reason we put it here because we need wait till the /sys/firmware
  * is setup, then our interface can be registered in /sys/firmware/sfi
  */
 core_initcall(sfi_sysfs_init);