wifi: wilc1000: set atomic flag on kmemdup in srcu critical section

In order to prepare wilc1000 driver switch from SRCU to RCU, make sure that
allocators are provided with the GFP_ATOMIC flag when called in a critical
read section.

Signed-off-by: Alexis Lothoré <alexis.lothore@bootlin.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://msgid.link/20240410-wilc_srcu_to_rcu-v1-1-a9ff5b10feaa@bootlin.com

drivers/net/wireless/microchip/wilc1000/hif.c

@@ -1594,7 +1594,7 @@ void wilc_network_info_received(struct wilc *wilc, u8 *buffer, u32 length)
 	msg->body.net_info.rssi = buffer[8];
 	msg->body.net_info.mgmt = kmemdup(&buffer[9],
 					  msg->body.net_info.frame_len,
-					  GFP_KERNEL);
+					  GFP_ATOMIC);
 	if (!msg->body.net_info.mgmt) {
 		kfree(msg);
 		goto out;