main: update to version 1.2

- add gpt command to write gpt table
- add ul command, need run db first

Signed-off-by: Liu Yi <liuyi@rock-chips.com>
Signed-off-by: Kever Yang <kever.yang@rock-chips.co

main: update to version 1.2

- add gpt command to write gpt table
- add ul command, need run db first

Signed-off-by: Liu Yi <liuyi@rock-chips.com>
Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
Tested-by: Kever Yang <kever.yang@rock-chips.com>

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