gnu-efi: Fix build with gcc7

(From OE-Core rev: a253743f3e3badadb0afe90a277dd4d252b32c6c)

(From OE-Core rev: 264d276de62e3ea0c9b546d2f0b5d555a926bee7)

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Armin Kuster <akuster808@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

Fixup for mporty context
Signed-off-by: Armin Kuster <akuster808@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-bsp/gnu-efi/gnu-efi/0001-Mark-our-explicit-fall-through-so-Wextra-will-work-i.patch

@@ -0,0 +1,34 @@
+From 676a8a9001f06808b4dbe0a545d76b5d9a8ebf48 Mon Sep 17 00:00:00 2001
+From: Peter Jones <pjones@redhat.com>
+Date: Thu, 2 Feb 2017 13:51:27 -0500
+Subject: [PATCH] Mark our explicit fall through so -Wextra will work in gcc 7
+
+gcc 7 introduces detection of fall-through behavior in switch/case
+statements, and will warn if -Wimplicit-fallthrough is present and there
+is no comment stating that the fall-through is intentional.  This is
+also triggered by -Wextra, as it enables -Wimplicit-fallthrough=1.
+
+This patch adds the comment in the one place we use fall-through.
+
+Signed-off-by: Peter Jones <pjones@redhat.com>
+---
+Upstream-Status: Pending
+
+ lib/print.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/lib/print.c b/lib/print.c
+index b8a9d38..cb732f0 100644
+--- a/lib/print.c
++++ b/lib/print.c
+@@ -1131,6 +1131,7 @@ Returns:
+             case 'X':
+                 Item.Width = Item.Long ? 16 : 8;
+                 Item.Pad = '0';
++		/* falls through */
+             case 'x':
+                 ValueToHex (
+                     Item.Scratch,
+-- 
+2.12.2
+

meta/recipes-bsp/gnu-efi/gnu-efi_3.0.4.bb

@@ -17,7 +17,8 @@ SRC_URI = "${SOURCEFORGE_MIRROR}/${BPN}/${BP}.tar.bz2 \
            file://lib-Makefile-fix-parallel-issue.patch \
            file://gcc46-compatibility.patch \
            file://aarch64-initplat.c-fix-const-qualifier.patch \
-          "
+           file://0001-Mark-our-explicit-fall-through-so-Wextra-will-work-i.patch \
+           "
 
 SRC_URI[md5sum] = "612e0f327f31c4b8468ef55f4eeb9649"
 SRC_URI[sha256sum] = "51a00428c3ccb96db24089ed8394843c4f83cf8f42c6a4dfddb4b7c23f2bf8af"