Place the DTB between the OpenSBI and the kernel (#1)

This removes the minimum RAM size and maximum kernel size restriction.
See also riscv-software-src#169

platform/generic/config.mk

@@ -28,7 +28,7 @@ else
   # This needs to be 2MB aligned for 64-bit system
   FW_JUMP_ADDR=$(shell printf "0x%X" $$(($(FW_TEXT_START) + 0x200000)))
 endif
-FW_JUMP_FDT_ADDR=$(shell printf "0x%X" $$(($(FW_TEXT_START) + 0x2200000)))
+FW_JUMP_FDT_ADDR=$(shell printf "0x%X" $$(($(FW_TEXT_START) + 0x100000)))
 FW_PAYLOAD=y
 ifeq ($(PLATFORM_RISCV_XLEN), 32)
   # This needs to be 4MB aligned for 32-bit system