Fix common misspellings

Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
diff --git a/drivers/usb/gadget/amd5536udc.h b/drivers/usb/gadget/amd5536udc.h
index 4bbabbb..1d1c754 100644
--- a/drivers/usb/gadget/amd5536udc.h
+++ b/drivers/usb/gadget/amd5536udc.h
@@ -584,7 +584,7 @@
  * SET and GET bitfields in u32 values
  * via constants for mask/offset:
  * <bit_field_stub_name> is the text between
- * UDC_ and _MASK|_OFS of appropiate
+ * UDC_ and _MASK|_OFS of appropriate
  * constant
  *
  * set bitfield value in u32 u32Val