nb/intel/pineview: Use a common MMCONF_BASE_ADDRESS

This should not be board specific.

Change-Id: Ifa617e84af767f33a94f1ddfa7d4883c1a45198f
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/28224
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>

src/mainboard/intel/d510mo/Kconfig

@@ -34,10 +34,6 @@ config MAX_CPUS
 	int
 	default 4
 
-config MMCONF_BASE_ADDRESS
-	hex
-	default 0xe0000000
-
 config MAINBOARD_DIR
 	string
 	default intel/d510mo

src/northbridge/intel/pineview/Kconfig

@@ -39,4 +39,8 @@ config VGA_BIOS_ID
 	string
 	default "8086,a001"
 
+config MMCONF_BASE_ADDRESS
+	hex
+	default 0xe0000000
+
 endif