More kconfig cleanups:

More kconfig cleanups:

 - Use "default n" for all components that shall be "select"ed.

 - Use "0x0" instead of "0" for hex variables for clarity and to reduce
   the risk of people passing integer instead of hex values to such variables.

 - Add TODO comments for boards that have irq_tables.c but don' set
   CONFIG_HAVE_PIRQ_TABLE = 1. Someone with the hardware should test enabling.

 - ASUS M2V-MX SE doesn't have irq_tables.c so don't define
   IRQ_SLOT_COUNT in its Kconfig file.

Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de>
Acked-by: Myles Watson <mylesgw@gmail.com>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@4749 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1