platform: project: msm8996: Add support for 6gb ddr

Add support for 6gb ddr and update the kernel load address based on the
size of the ddr.

CRs-Fixed: 961081
Change-Id: I460aa3c87d3d1f45492a854527d25c190de535c9
diff --git a/include/platform.h b/include/platform.h
index 945ed27..07b1c04 100644
--- a/include/platform.h
+++ b/include/platform.h
@@ -87,4 +87,5 @@
 bool is_device_locked();
 bool platform_is_mdmcalifornium();
 bool platform_is_sdxhedgehog();
+uint64_t platform_get_ddr_start();
 #endif