[syslinux:wip.makefixes] gnu-efi: update with upstream fixes

[syslinux-bot for H. Peter Anvin (Intel)]

Commit-ID:  518d31992a8cc6b0767386fe0ca8719c7e2b418d
Gitweb:     https://www.syslinux.org/commit/518d31992a8cc6b0767386fe0ca8719c7e2b418d
Author:     H. Peter Anvin (Intel) <hpa at zytor.com>
AuthorDate: Sat, 23 Mar 2019 16:36:36 -0700
Committer:  H. Peter Anvin (Intel) <hpa at zytor.com>
CommitDate: Sat, 23 Mar 2019 16:36:36 -0700

gnu-efi: update with upstream fixes

We need certain fixes which are now in upstream, so bump the gnu-efi
snapshot.

Signed-off-by: H. Peter Anvin (Intel) <hpa at zytor.com>

---
 gnu-efi | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gnu-efi b/gnu-efi
index d34132e6..7604ff26 160000
--- a/gnu-efi
+++ b/gnu-efi
@@ -1 +1 @@
-Subproject commit d34132e62f666904158c7ec2f1eef5a9d5281c36
+Subproject commit 7604ff262930063ee71251fde31a38083868e808