ACPI: Kconfig - depend on PM rather than selecting it

Make ACPI depend on PM rather than selecting it.
Otherwise it's a nightmare working out why CONFIG_PM keeps getting set.
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLen Brown <len.brown@intel.com>

drivers/acpi/Kconfig

@@ -11,7 +11,7 @@ config ACPI
 	bool "ACPI Support"
 	depends on IA64 || X86
 	depends on PCI
-	select PM
+	depends on PM
 	default y
 	---help---
 	  Advanced Configuration and Power Interface (ACPI) support for