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>
1 file changed