[PATCH] powerpc: Make KVM_GUEST default to n

KVM_GUEST adds a 1 MB array to the kernel (kvm_tmp) which grew
my kernel enough to cause it to fail to boot.

Dynamically allocating or reducing the size of this array is a
good idea, but in the meantime I think it makes sense to make
KVM_GUEST default to n in order to minimise surprises.

Signed-off-by: Anton Blanchard <redacted>
---

Index: linux-powerpc/arch/powerpc/platforms/Kconfig
===================================================================

--- linux-powerpc.orig/arch/powerpc/platforms/Kconfig	2011-08-01 17:33:46.120121554 +1000
+++ linux-powerpc/arch/powerpc/platforms/Kconfig	2011-08-01 17:35:06.921772044 +1000

@@ -24,7 +24,7 @@ source "arch/powerpc/platforms/wsp/Kconf
 
 config KVM_GUEST
 	bool "KVM Guest support"
-	default y
+	default n
 	---help---
 	  This option enables various optimizations for running under the KVM
 	  hypervisor. Overhead for the kernel when not running inside KVM should