mb/*/*/Kconfig: Remove default MMCONF_BASE_ADDRESS on Sandy Bridge

Change-Id: I6f0d6d7fefc77fb05cdb629d09de8cb72496a9cc
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/22664
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
diff --git a/src/mainboard/compulab/intense_pc/Kconfig b/src/mainboard/compulab/intense_pc/Kconfig
index 283d63a..81085bc 100644
--- a/src/mainboard/compulab/intense_pc/Kconfig
+++ b/src/mainboard/compulab/intense_pc/Kconfig
@@ -47,10 +47,6 @@
 	hex
 	default 0x8086
 
-config MMCONF_BASE_ADDRESS
-	hex
-	default 0xf0000000
-
 config DRAM_RESET_GATE_GPIO # FIXME: check this
 	int
 	default 60
diff --git a/src/mainboard/lenovo/l520/Kconfig b/src/mainboard/lenovo/l520/Kconfig
index 7043184..20ed67c 100644
--- a/src/mainboard/lenovo/l520/Kconfig
+++ b/src/mainboard/lenovo/l520/Kconfig
@@ -50,10 +50,6 @@
 	hex
 	default 0x17aa
 
-config MMCONF_BASE_ADDRESS
-	hex
-	default 0xf0000000
-
 config DRAM_RESET_GATE_GPIO
 	int
 	default 10
diff --git a/src/mainboard/lenovo/s230u/Kconfig b/src/mainboard/lenovo/s230u/Kconfig
index 4b6727ca..f724784 100644
--- a/src/mainboard/lenovo/s230u/Kconfig
+++ b/src/mainboard/lenovo/s230u/Kconfig
@@ -35,10 +35,6 @@
 	string
 	default "ThinkPad S230U (Twist)"
 
-config MMCONF_BASE_ADDRESS
-	hex
-	default 0xf0000000
-
 config EC_BASE_ADDRESS
 	hex
 	default 0xff000000