Squelch some warnings from Kconfig

Overriding global config entries in mainboard directory Kconfig
files often raise unnecessary warnings. Squelch some of those.

Change-Id: Ib5127672ae068670028aa25c8ccb5366277622f2
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/5699
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>

src/mainboard/hp/dl165_g6_fam10/Kconfig

@@ -17,6 +17,7 @@ config BOARD_SPECIFIC_OPTIONS # dummy
 	select ENABLE_APIC_EXT_ID
 	select AMDMCT
 	select QRANK_DIMM_SUPPORT
+	select MMCONF_SUPPORT_DEFAULT
 
 config MAINBOARD_DIR
 	string
@@ -86,8 +87,4 @@ config BOOTBLOCK_MAINBOARD_INIT
 	string
 	default "mainboard/hp/dl165_g6_fam10/bootblock.c"
 
-config MMCONF_SUPPORT_DEFAULT
-	bool
-	default y
-
 endif # BOARD_HP_DL165_G6_FAM10

src/mainboard/intel/cougar_canyon2/Kconfig

@@ -14,6 +14,7 @@ config BOARD_SPECIFIC_OPTIONS # dummy
 	select ENABLE_VMX
 	select EARLY_CBMEM_INIT
 	select BROKEN_CAR_MIGRATE
+	select VGA
 
 config MAINBOARD_DIR
 	string
@@ -47,10 +48,6 @@ config UDELAY_LAPIC_FIXED_FSB
 	int
 	default 100
 
-config VGA
-	bool
-	default y
-
 config VIRTUAL_ROM_SIZE
 	hex
 	default 0x1000000

src/mainboard/msi/ms9652_fam10/Kconfig

@@ -49,10 +49,6 @@ config MAX_PHYSICAL_CPUS
 	int
 	default 2
 
-config LOGICAL_CPUS
-	bool
-	default y
-
 config HEAP_SIZE
 	hex
 	default 0x20000