via/cx700: Move HAVE_HARD_RESET to northbridge

No in-tree cx700-using board has it not selected, so move
selection from boards to northbridge.

Change-Id: Ifa79954a48cf99b5f7e49960eafce805401e571c
Signed-off-by: Patrick Georgi <patrick@georgi-clan.de>
Reviewed-on: http://review.coreboot.org/656
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
diff --git a/src/mainboard/via/vt8454c/Kconfig b/src/mainboard/via/vt8454c/Kconfig
index c9a0105..5739d2a 100644
--- a/src/mainboard/via/vt8454c/Kconfig
+++ b/src/mainboard/via/vt8454c/Kconfig
@@ -11,7 +11,6 @@
 	select HAVE_PIRQ_TABLE
 	select HAVE_MP_TABLE
 #	select MMCONF_SUPPORT
-	select HAVE_HARD_RESET
 	select HAVE_ACPI_TABLES
 	select BOARD_ROMSIZE_KB_512