libiscsi: fix build failures due to warnings

Retrieve two upstream patches to fix build failures due to warnings

Fixes:
 - http://autobuild.buildroot.org/results/7ec1e1cc060bbdaaf758c0d55a053247b731e792

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Acked-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
(cherry picked from commit 6a5e9a7ac6e20f8cb2251b61b09b54d51bedfa82)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/libiscsi/0002-avoid-truncation-when-logging-message-that-includes-target-name.patch

@@ -0,0 +1,29 @@
+From bffafc1c3003c2ee05d28eaa345e5854bc36014d Mon Sep 17 00:00:00 2001
+From: Paolo Bonzini <pbonzini@redhat.com>
+Date: Mon, 1 Oct 2018 14:16:14 +0200
+Subject: [PATCH] avoid truncation when logging message that includes target
+ name
+
+Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
+[Retrieved from:
+https://github.com/sahlberg/libiscsi/commit/bffafc1c3003c2ee05d28eaa345e5854bc36014d]
+---
+ lib/logging.c | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/lib/logging.c b/lib/logging.c
+index be518fc5..61c74407 100644
+--- a/lib/logging.c
++++ b/lib/logging.c
+@@ -73,9 +73,9 @@ iscsi_log_message(struct iscsi_context *iscsi, int level, const char *format, ..
+ 	}
+ 
+ 	if (iscsi->target_name[0]) {
+-		static char message2[1024];
++		static char message2[1282];
+ 
+-		snprintf(message2, 1024, "%s [%s]", message, iscsi->target_name);
++		snprintf(message2, 1282, "%s [%s]", message, iscsi->target_name);
+ 		iscsi->log_fn(level, message2);
+ 	}
+ 	else

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;
+ 	}