gm45 boards: Switch to use DYNAMIC_CBMEM

Change-Id: Id19d31a2d114bb796b31ad61802d40c8608e4020
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/6038
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <gaumless@gmail.com>
diff --git a/src/northbridge/intel/gm45/Kconfig b/src/northbridge/intel/gm45/Kconfig
index adf1c1b..5ce56d9 100644
--- a/src/northbridge/intel/gm45/Kconfig
+++ b/src/northbridge/intel/gm45/Kconfig
@@ -27,6 +27,7 @@
 	select HAVE_DEBUG_RAM_SETUP
 	select MMCONF_SUPPORT
 	select MMCONF_SUPPORT_DEFAULT
+	select DYNAMIC_CBMEM
 	select IOMMU
 
 config BOOTBLOCK_NORTHBRIDGE_INIT