libosmocore.map: add missing symbols needed for osmo-qcdiag

Change 213fc420e broke osmo-qcdiag:

  /usr/bin/ld: diagchar_hdlc.o: in function `osmo_crc16_ccitt_byte':
  src/diagchar_hdlc.c:46: undefined reference to `osmo_crc16_ccitt_table'
  /usr/bin/ld: warning: creating DT_TEXTREL in a PIE
  collect2: error: ld returned 1 exit status
  make: *** [Makefile:8: osmo-qcdiag-log] Error 1

Change-Id: I7e84546b484db4822554681b31625d0520617d2b
Fixes: 213fc420e "Add libosmocore.map"
diff --git a/src/core/libosmocore.map b/src/core/libosmocore.map
index bd1b3d9..095a4c0 100644
--- a/src/core/libosmocore.map
+++ b/src/core/libosmocore.map
@@ -161,6 +161,8 @@
 osmo_counters_for_each;
 osmo_crc16;
 osmo_crc16_ccitt;
+osmo_crc16_ccitt_table;
+osmo_crc16_table;
 osmo_crc16gen_check_bits;
 osmo_crc16gen_compute_bits;
 osmo_crc16gen_set_bits;