add BSSMAP-LE coding for Location Services

BSSMAP-LE: add Lb-interface messages between BSC and SMLC:
- Reset
- Reset Acknowledge
- Perform Location Request, possibly containing BSSLAP TA Layer3
- Perform Location Response
- Perform Location Abort
- Connection Oriented Information containing any BSSLAP APDU

Add encoding and decoding tests.

Change-Id: I271e59b794bafc0a7ae0eabbf58918f6d7df431d
diff --git a/tests/bssmap_le/bssmap_le_test.ok b/tests/bssmap_le/bssmap_le_test.ok
new file mode 100644
index 0000000..a6f0dee
--- /dev/null
+++ b/tests/bssmap_le/bssmap_le_test.ok
@@ -0,0 +1,11 @@
+--- test_bssmap_le_enc_dec
+[0] RESET: ok (encoded len = 6)
+[1] RESET ACKNOWLEDGE: ok (encoded len = 3)
+[2] PERFORM LOCATION REQUEST: ok (encoded len = 41)
+[3] PERFORM LOCATION RESPONSE: ok (encoded len = 13)
+[4] PERFORM LOCATION RESPONSE: ok (encoded len = 6)
+[5] PERFORM LOCATION RESPONSE: ok (encoded len = 7)
+[6] PERFORM LOCATION ABORT: ok (encoded len = 6)
+[7] CONNECTION ORIENTED INFORMATON: ok (encoded len = 8)
+[8] CONNECTION ORIENTED INFORMATON: ok (encoded len = 13)
+[9] CONNECTION ORIENTED INFORMATON: ok (encoded len = 10)