linux: update to v4.2.5-openpower1

 - Rebased on upstream stable release v4.2.5

Signed-off-by: Joel Stanley <joel@jms.id.au>
diff --git a/openpower/linux/linux-0001-powerpc-Add-openpower_defconfig.patch b/openpower/linux/linux-0001-powerpc-Add-openpower_defconfig.patch
index 8ce8b7f..3dfb56e 100644
--- a/openpower/linux/linux-0001-powerpc-Add-openpower_defconfig.patch
+++ b/openpower/linux/linux-0001-powerpc-Add-openpower_defconfig.patch
@@ -1,4 +1,4 @@
-From 70f789b86a2daaa88e89d11e1e4c726f110094e7 Mon Sep 17 00:00:00 2001
+From 3700065f5c1b076e49aa81eff729012fd2da6b54 Mon Sep 17 00:00:00 2001
 From: Jeremy Kerr <jk@ozlabs.org>
 Date: Fri, 12 Dec 2014 08:03:11 +0800
 Subject: [PATCH 01/17] powerpc: Add openpower_defconfig