Bump buildroot to version 2018.02.8

bsp/buildroot/package/libiscsi/0003-avoid-fallthrough.patch

@@ -0,0 +1,24 @@
+From 679d0abe7c142df178a907397551c4d9695cc667 Mon Sep 17 00:00:00 2001
+From: Paolo Bonzini <pbonzini@redhat.com>
+Date: Mon, 1 Oct 2018 14:14:24 +0200
+Subject: [PATCH] avoid fallthrough
+
+Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
+[Retrieved from:
+https://github.com/sahlberg/libiscsi/commit/679d0abe7c142df178a907397551c4d9695cc667]
+---
+ lib/scsi-lowlevel.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/lib/scsi-lowlevel.c b/lib/scsi-lowlevel.c
+index 5ddd709c..747ce0c4 100644
+--- a/lib/scsi-lowlevel.c
++++ b/lib/scsi-lowlevel.c
+@@ -1086,6 +1086,7 @@ scsi_maintenancein_datain_getfullsize(struct scsi_task *task)
+ 				(task_get_uint8(task, 1) & 0x80) ? 12 : 0 +
+ 				task_get_uint16(task, 2);
+ 		}
++		return -1;
+ 	default:
+ 		return -1;
+ 	}