sb/intel/common: Make linking pmbase.c conditional

Change-Id: I6a7cd96699dbeb42a53bf1d25db1bcf93e416e0f
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/33200
Reviewed-by: Patrick Rudolph <siro@das-labor.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/southbridge/intel/lynxpoint/Kconfig b/src/southbridge/intel/lynxpoint/Kconfig
index 67e20be..2c28940 100644
--- a/src/southbridge/intel/lynxpoint/Kconfig
+++ b/src/southbridge/intel/lynxpoint/Kconfig
@@ -27,6 +27,7 @@
 	select SOUTHBRIDGE_INTEL_COMMON_ACPI_MADT
 	select SOUTHBRIDGE_INTEL_COMMON_FINALIZE
 	select SOUTHBRIDGE_INTEL_COMMON_PMCLIB
+	select SOUTHBRIDGE_INTEL_COMMON_PMBASE
 	select IOAPIC
 	select HAVE_SMI_HANDLER
 	select HAVE_USBDEBUG_OPTIONS