Fix ACPI frequency states to not play games with the

configuration system, and instead just cleanly show
the dependency.

drivers/acpi/Config.in

@@ -22,10 +22,7 @@ if [ "$CONFIG_X86" = "y" ]; then
          tristate '  Fan' CONFIG_ACPI_FAN
          tristate '  Processor'	CONFIG_ACPI_PROCESSOR
          if [ "$CONFIG_ACPI_PROCESSOR" != "n" ]; then
-            bool '     Processor Performance States' CONFIG_ACPI_PROCESSOR_PERF
-            if [ "$CONFIG_CPU_FREQ" != "y" ]; then
-               define_bool CONFIG_CPU_FREQ $CONFIG_ACPI_PROCESSOR_PERF
-            fi
+            dep_bool '     Processor Performance States' CONFIG_ACPI_PROCESSOR_PERF $CONFIG_CPU_FREQ
          fi
          dep_tristate '  Thermal Zone' CONFIG_ACPI_THERMAL $CONFIG_ACPI_PROCESSOR
          if [ "$CONFIG_NUMA" = "y" ]; then