rxrpc: Static arrays of strings should be const char *const[]

Static arrays of strings should be const char *const[].
Signed-off-by: David Howells <dhowells@redhat.com>

include/rxrpc/packet.h

@@ -68,8 +68,6 @@ struct rxrpc_wire_header {
 
 } __packed;
 
-extern const char *rxrpc_pkts[];
-
 #define RXRPC_SUPPORTED_PACKET_TYPES (			\
 		(1 << RXRPC_PACKET_TYPE_DATA) |		\
 		(1 << RXRPC_PACKET_TYPE_ACK) |		\

net/rxrpc/ar-internal.h

@@ -637,7 +637,7 @@ extern unsigned int rxrpc_rx_window_size;
 extern unsigned int rxrpc_rx_mtu;
 extern unsigned int rxrpc_rx_jumbo_max;
 
-extern const char *rxrpc_pkts[];
+extern const char *const rxrpc_pkts[];
 extern const s8 rxrpc_ack_priority[];
 
 extern const char *rxrpc_acks(u8 reason);

net/rxrpc/misc.c

@@ -58,7 +58,7 @@ unsigned int rxrpc_rx_mtu = 5692;
  */
 unsigned int rxrpc_rx_jumbo_max = 4;
 
-const char *rxrpc_pkts[] = {
+const char *const rxrpc_pkts[] = {
 	"?00",
 	"DATA", "ACK", "BUSY", "ABORT", "ACKALL", "CHALL", "RESP", "DEBUG",
 	"?09", "?10", "?11", "?12", "VERSION", "?14", "?15"