AGESA: Conditionally enable RELOCATABLE_RAMSTAGE

Change-Id: Id199322db077fc5f112dfa45f8e9f72b9142a8fb
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/20770
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>

src/northbridge/amd/agesa/Kconfig

@@ -16,6 +16,7 @@
 config NORTHBRIDGE_AMD_AGESA
 	bool
 	default CPU_AMD_AGESA
+	select RELOCATABLE_RAMSTAGE if EARLY_CBMEM_INIT
 	select CBMEM_TOP_BACKUP
 
 if NORTHBRIDGE_AMD_AGESA