- make HAVE_HARD_RESET match what newconfig did

- make HAVE_HARD_RESET match what newconfig did
- introduce BOARD_HAS_HARD_RESET and use it if a board provides
hard_reset in $(MAINBOARDDIR)/reset.c, instead of some chipset component
- move a couple of rules out of the mainboards' Makefiles into
src/arch/i386/Makefile.inc:
	initobj-y += crt0.o
	obj-y += mainboard.o
	obj-$(CONFIG_GENERATE_MP_TABLE) += mptable.o
	obj-$(CONFIG_GENERATE_PIRQ_TABLE) += irq_tables.o
	obj-$(CONFIG_BOARD_HAS_HARD_RESET) += reset.o
- remove Makefile.incs that are empty (or comment-only) after these
changes, incl. Makefile.romccboard.inc (and references to it)
- Make include not fail if Makefile.inc doesn't exist.

Signed-off-by: Patrick Georgi <patrick.georgi@coresystems.de>
Acked-by: Myles Watson <mylesgw@gmail.com>
Acked-by: Peter Stuge <peter@stuge.se>
Acked-by: Stefan Reinauer <stepan@coresystems.de>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@5168 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1