net: mark read-only arrays as const

String literals are constant, and usually, we can also tag the array
of pointers const too, moving it to the .rodata section.

Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/sctp/constants.h b/include/net/sctp/constants.h
index b05b055..8bc25f7 100644
--- a/include/net/sctp/constants.h
+++ b/include/net/sctp/constants.h
@@ -241,7 +241,9 @@
 const char *sctp_pname(const sctp_subtype_t);	/* primitives */
 
 /* This is a table of printable names of sctp_state_t's.  */
-extern const char *sctp_state_tbl[], *sctp_evttype_tbl[], *sctp_status_tbl[];
+extern const char *const sctp_state_tbl[];
+extern const char *const sctp_evttype_tbl[];
+extern const char *const sctp_status_tbl[];
 
 /* Maximum chunk length considering padding requirements. */
 enum { SCTP_MAX_CHUNK_LEN = ((1<<16) - sizeof(__u32)) };