Bluetooth: use inclusive language in comments

This patch replaces some non-inclusive terms based on the appropriate
language mapping table compiled by the Bluetooth SIG:
https://specificationrefs.bluetooth.com/language-mapping/Appropriate_Language_Mapping_Table.pdf

Specifically, these terms are replaced:
slave       -> peripheral
blacklisted -> blocked

Signed-off-by: Archie Pusaka <apusaka@chromium.org>
Reviewed-by: Miao-chen Chou <mcchou@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index fac9724..80ec35c 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -2959,7 +2959,7 @@ static int pair_device(struct sock *sk, struct hci_dev *hdev, void *data,
 		/* When pairing a new device, it is expected to remember
 		 * this device for future connections. Adding the connection
 		 * parameter information ahead of time allows tracking
-		 * of the slave preferred values and will speed up any
+		 * of the peripheral preferred values and will speed up any
 		 * further connection establishment.
 		 *
 		 * If connection parameters already exist, then they