ACPI: Kconfig: hide ACPI menu when CONFIG_PM=n

Signed-off-by: Robert P. J. Day <rpjday@mindspring.com>
Signed-off-by: Len Brown <len.brown@intel.com>

drivers/acpi/Kconfig

@@ -7,6 +7,7 @@ menu "ACPI (Advanced Configuration and Power Interface) Support"
 	depends on !X86_VISWS
 	depends on !IA64_HP_SIM
 	depends on IA64 || X86
+	depends on PM
 
 config ACPI
 	bool "ACPI Support"