stats: Count paging requests flushed due to MSC Reset.

Change-Id: Ie93fc54fecdfcf615483f7f41a36dbcea61a537b
diff --git a/include/osmocom/bsc/gsm_data.h b/include/osmocom/bsc/gsm_data.h
index e6a7708..07a0c9d 100644
--- a/include/osmocom/bsc/gsm_data.h
+++ b/include/osmocom/bsc/gsm_data.h
@@ -1409,6 +1409,7 @@
 	BTS_CTR_PAGING_RESPONDED,
 	BTS_CTR_PAGING_EXPIRED,
 	BTS_CTR_PAGING_NO_ACTIVE_PAGING,
+	BTS_CTR_PAGING_MSC_FLUSH,
 	BTS_CTR_CHAN_ACT_TOTAL,
 	BTS_CTR_CHAN_ACT_NACK,
 	BTS_CTR_RSL_UNKNOWN,
@@ -1455,6 +1456,7 @@
 	[BTS_CTR_PAGING_RESPONDED] = 		{"paging:responded", "Paging attempts with successful paging response."},
 	[BTS_CTR_PAGING_EXPIRED] = 		{"paging:expired", "Paging Request expired because of timeout T3113."},
 	[BTS_CTR_PAGING_NO_ACTIVE_PAGING] =	{"paging:no_active_paging", "Paging response without an active paging request (arrived after paging expiration?)."},
+	[BTS_CTR_PAGING_MSC_FLUSH] =		{"paging:msc_flush", "Paging flushed due to MSC Reset BSSMAP message."},
 	[BTS_CTR_CHAN_ACT_TOTAL] =		{"chan_act:total", "Total number of Channel Activations."},
 	[BTS_CTR_CHAN_ACT_NACK] =		{"chan_act:nack", "Number of Channel Activations that the BTS NACKed"},
 	[BTS_CTR_RSL_UNKNOWN] =			{"rsl:unknown", "Number of unknown/unsupported RSL messages received from BTS"},