lippert/hurricane-lx: Kconfig cleanup

A Kconfig option defined instead of selected that really comes from
somewhere else.

Change-Id: I8730d12ed053520b794655e943c93583c441f3f1
Signed-off-by: Patrick Georgi <patrick@georgi-clan.de>
Reviewed-on: http://review.coreboot.org/5542
Tested-by: build bot (Jenkins)
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
diff --git a/src/mainboard/lippert/hurricane-lx/Kconfig b/src/mainboard/lippert/hurricane-lx/Kconfig
index 64e1631..234f216 100644
--- a/src/mainboard/lippert/hurricane-lx/Kconfig
+++ b/src/mainboard/lippert/hurricane-lx/Kconfig
@@ -15,6 +15,7 @@
 	select BOARD_ROMSIZE_KB_512
 	select PLL_MANUAL_CONFIG
 	select CORE_GLIU_500_333
+	select POWER_BUTTON_FORCE_ENABLE if !BOARD_OLD_REVISION
 
 config MAINBOARD_DIR
 	string
@@ -42,9 +43,6 @@
 	  jumper has been removed.  New revision boards are not restricted
 	  in this way, and always have the power button enabled.
 
-config POWER_BUTTON_FORCE_ENABLE
-	def_bool y if !BOARD_OLD_REVISION
-
 config ONBOARD_UARTS_RS485
 	bool "Switch on-board serial ports to RS485"
 	default n