riscv: fix bug of sifive-gpt.py

The GPT version must be "00 00 01 00" and the little endian should be
represented as 0x10000.

Please refer to: https://en.wikipedia.org/wiki/GUID_Partition_Table

Change-Id: Ib025197fc96f32823e687a89de0cee51c952b031
Signed-off-by: Xiang Wang <wxjstz@126.com>
Reviewed-on: https://review.coreboot.org/c/29767
Reviewed-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

util/riscv/sifive-gpt.py

@@ -88,7 +88,7 @@ class GPTHeader:
     def pack_with_crc(self, crc):
         header_size = 92
         header = struct.pack('<8sIIIIQQQQ16sQIII',
-                b'EFI PART', 0x100, header_size, crc, 0,
+                b'EFI PART', 0x10000, header_size, crc, 0,
                 self.current_lba, self.backup_lba, self.first_usable_lba,
                 self.last_usable_lba, self.uniq.get_bytes(),
                 self.part_entries_lba, self.part_entries_number,