fix typo in enum BSS_MAP_MSG_TYPE: BSS_MAP_MSG_ASSIGMENT*

Keep #defines to still support previous wrong spelling.

Change-Id: Id4cf812f0bc3cd40f6bfa05166f817a07a647f71
diff --git a/include/osmocom/gsm/protocol/gsm_08_08.h b/include/osmocom/gsm/protocol/gsm_08_08.h
index 676d1cf..5e93abe 100644
--- a/include/osmocom/gsm/protocol/gsm_08_08.h
+++ b/include/osmocom/gsm/protocol/gsm_08_08.h
@@ -50,9 +50,9 @@
 	BSS_MAP_MSG_RESERVED_0		= 0,
 
 	/* ASSIGNMENT MESSAGES */
-	BSS_MAP_MSG_ASSIGMENT_RQST	= 1,
-	BSS_MAP_MSG_ASSIGMENT_COMPLETE	= 2,
-	BSS_MAP_MSG_ASSIGMENT_FAILURE	= 3,
+	BSS_MAP_MSG_ASSIGNMENT_RQST	= 1,
+	BSS_MAP_MSG_ASSIGNMENT_COMPLETE	= 2,
+	BSS_MAP_MSG_ASSIGNMENT_FAILURE	= 3,
 	BSS_MAP_MSG_CHAN_MOD_RQST	= 8,
 
 	/*  HANDOVER MESSAGES */
@@ -158,6 +158,10 @@
 	BSS_MAP_MSG_LCLS_NOTIFICATION		= 0x76,
 };
 
+#define BSS_MAP_MSG_ASSIGMENT_RQST BSS_MAP_MSG_ASSIGNMENT_RQST
+#define BSS_MAP_MSG_ASSIGMENT_COMPLETE BSS_MAP_MSG_ASSIGNMENT_COMPLETE
+#define BSS_MAP_MSG_ASSIGMENT_FAILURE BSS_MAP_MSG_ASSIGNMENT_FAILURE
+
 enum GSM0808_IE_CODING {
 	GSM0808_IE_CIRCUIT_IDENTITY_CODE	= 1,
 	GSM0808_IE_RESERVED_0			= 2,