platform/x86: dell_rbu: Remove unused struct

Stop using an entire struct packet_data just for its embedded list_head.

Signed-off-by: Stuart Hayes <stuart.w.hayes@gmail.com>
Link: https://lore.kernel.org/r/20250609184659.7210-4-stuart.w.hayes@gmail.com
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>

Author: stuartwhayes

drivers/platform/x86/dell/dell_rbu.c

@@ -77,14 +77,14 @@ struct packet_data {
 	int ordernum;
 };
 
-static struct packet_data packet_data_head;
+static struct list_head packet_data_list;
 
 static struct platform_device *rbu_device;
 static int context;
 
 static void init_packet_head(void)
 {
-	INIT_LIST_HEAD(&packet_data_head.list);
+	INIT_LIST_HEAD(&packet_data_list);
 	rbu_data.packet_read_count = 0;
 	rbu_data.num_packets = 0;
 	rbu_data.packetsize = 0;
@@ -183,7 +183,7 @@ static int create_packet(void *data, size_t length) __must_hold(&rbu_data.lock)
 
 	/* initialize the newly created packet headers */
 	INIT_LIST_HEAD(&newpacket->list);
-	list_add_tail(&newpacket->list, &packet_data_head.list);
+	list_add_tail(&newpacket->list, &packet_data_list);
 
 	memcpy(newpacket->data, data, length);
 
@@ -292,7 +292,7 @@ static int packet_read_list(char *data, size_t * pread_length)
 	remaining_bytes = *pread_length;
 	bytes_read = rbu_data.packet_read_count;
 
-	list_for_each_entry(newpacket, &packet_data_head.list, list) {
+	list_for_each_entry(newpacket, &packet_data_list, list) {
 		bytes_copied = do_packet_read(pdest, newpacket,
 			remaining_bytes, bytes_read, &temp_count);
 		remaining_bytes -= bytes_copied;
@@ -315,7 +315,7 @@ static void packet_empty_list(void)
 {
 	struct packet_data *newpacket, *tmp;
 
-	list_for_each_entry_safe(newpacket, tmp, &packet_data_head.list, list) {
+	list_for_each_entry_safe(newpacket, tmp, &packet_data_list, list) {
 		list_del(&newpacket->list);
 
 		/*