firmware: arm_scmi: Remove unneeded __packed attribute

Remove __packed attribute from struct scmi_event_header.

Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Cristian Marussi <[email protected]>
Signed-off-by: Sudeep Holla <[email protected]>

Author: cris-ma

drivers/firmware/arm_scmi/notify.c

@@ -258,7 +258,7 @@ struct scmi_event_header {
 	u8	evt_id;
 	size_t	payld_sz;
 	u8	payld[];
-} __packed;
+};
 
 struct scmi_registered_event;