[gnome-sdk-images] Add perf to sdk

[Alexander Larsson <alexl src gnome org>]

commit 8d7b3bdcae80479035720c2b16e3114a5c256e47
Author: Alexander Larsson <alexl redhat com>
Date:   Wed Dec 9 08:27:20 2015 +0100

    Add perf to sdk

 Makefile               |    2 +-
 freedesktop-sdk-images |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/Makefile b/Makefile
index d3de698..0d50d00 100644
--- a/Makefile
+++ b/Makefile
@@ -3,7 +3,7 @@ ID=org.gnome
 VERSION=3.18
 ARCH=x86_64
 IMAGEDIR=freedesktop-sdk-base/images/$(ARCH)
-BASE_HASH=aa1b462fa0d32e8c4b2d44a128b16c5d0ead00e3
+BASE_HASH=52853d3961aeba5e24cfb251422c2d0842340039
 
 EXTRA_NAME=
 DELTAS=
diff --git a/freedesktop-sdk-images b/freedesktop-sdk-images
index 2418780..be1f687 160000
--- a/freedesktop-sdk-images
+++ b/freedesktop-sdk-images
@@ -1 +1 @@
-Subproject commit 2418780535f68b636257e2a56c3d01e1dd2aa04b
+Subproject commit be1f68725cdf2f0cb5f73733c8fe8c4032f372b9