QcomModulePkg: Correct DDR size check for choosing DTB

Absolute DDR check fails for SDX targets. Make it a best match.

Change-Id: Ie2588a1998de7b7a937acff6fd5436150148f55d
diff --git a/QcomModulePkg/Include/Library/LocateDeviceTree.h b/QcomModulePkg/Include/Library/LocateDeviceTree.h
index 7970d94..40f70b0 100644
--- a/QcomModulePkg/Include/Library/LocateDeviceTree.h
+++ b/QcomModulePkg/Include/Library/LocateDeviceTree.h
@@ -216,6 +216,7 @@
 
 enum dt_entry_info {
   DTB_FOUNDRY = 0,
+  DTB_DDR,
   DTB_SOC,
   DTB_MAJOR_MINOR,
   DTB_PMIC0,