[PATCH]xen: fix up config dependencies on PM

[Jeremy Fitzhardinge <jeremy@goop.org>]

Xen save/restore needs bits of code enabled by PM_SLEEP, and PM_SLEEP
depends on PM.  So make XEN_SAVE_RESTORE depend on PM and PM_SLEEP
depend on XEN_SAVE_RESTORE.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
---
 arch/x86/xen/Kconfig |    5 +++++
 kernel/power/Kconfig |    2 +-
 2 files changed, 6 insertions(+), 1 deletion(-)

===================================================================
--- a/arch/x86/xen/Kconfig
+++ b/arch/x86/xen/Kconfig
@@ -23,3 +23,8 @@
          according to the maximum possible memory size of a Xen
          domain.  This array uses 1 page per gigabyte, so there's no
          need to be too stingy here.
+
+config XEN_SAVE_RESTORE
+       bool
+       depends on PM
+       default y
\ No newline at end of file
===================================================================
--- a/kernel/power/Kconfig
+++ b/kernel/power/Kconfig
@@ -82,7 +82,7 @@
 
 config PM_SLEEP
 	bool
-	depends on SUSPEND || HIBERNATION
+	depends on SUSPEND || HIBERNATION || XEN_SAVE_RESTORE
 	default y
 
 config SUSPEND