Drop unneeded BOARD_HAS_FADT option

Change-Id: Iaaeee87d70cf052bc7980007cdf1f7dda88b3623
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/1836
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

src/mainboard/iwave/iWRainbowG6/Kconfig

@@ -7,7 +7,6 @@ config BOARD_SPECIFIC_OPTIONS # dummy
 	select CPU_INTEL_SOCKET_441
 	select NORTHBRIDGE_INTEL_SCH
 	select SOUTHBRIDGE_INTEL_SCH
-	select BOARD_HAS_FADT
 	select HAVE_PIRQ_TABLE
 #	select HAVE_MP_TABLE
 	select MMCONF_SUPPORT