powerpc: enable heap randomization for linkstations

The current defconfig for Linkstation/Kuroboxes has the "Disable Heap
Randomization" option enabled.

Since some of these machines are facing the internet, it helps to have
heap randomization enabled. This patch enables it.

Signed-off-by: Rogério Brito <rbrito@ime.usp.br>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
diff --git a/arch/powerpc/configs/linkstation_defconfig b/arch/powerpc/configs/linkstation_defconfig
index 8d869e9..851b27e 100644
--- a/arch/powerpc/configs/linkstation_defconfig
+++ b/arch/powerpc/configs/linkstation_defconfig
@@ -101,7 +101,7 @@
 CONFIG_PRINTK=y
 CONFIG_BUG=y
 CONFIG_ELF_CORE=y
-CONFIG_COMPAT_BRK=y
+# CONFIG_COMPAT_BRK is not set
 CONFIG_BASE_FULL=y
 CONFIG_FUTEX=y
 CONFIG_ANON_INODES=y