nb/intel/*/Kconfig: Remove dummy NORTHBRIDGE_SPECIFIC_OPTIONS

Change-Id: Icecef272bd4cd2a204c903783787bbec751fe9e5
Signed-off-by: Elyes Haouas <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/71613
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
diff --git a/src/northbridge/intel/gm45/Kconfig b/src/northbridge/intel/gm45/Kconfig
index 0b0ff5162..39e15ad 100644
--- a/src/northbridge/intel/gm45/Kconfig
+++ b/src/northbridge/intel/gm45/Kconfig
@@ -2,11 +2,6 @@
 
 config NORTHBRIDGE_INTEL_GM45
 	bool
-
-if NORTHBRIDGE_INTEL_GM45
-
-config NORTHBRIDGE_SPECIFIC_OPTIONS
-	def_bool y
 	select HAVE_DEBUG_RAM_SETUP
 	select VGA
 	select INTEL_EDID
@@ -19,6 +14,8 @@
 	select USE_DDR3
 	select USE_DDR2
 
+if NORTHBRIDGE_INTEL_GM45
+
 config VBOOT
 	select VBOOT_STARTS_IN_BOOTBLOCK