RK3328/RK3326/PX30: enable CONFIG_OF_LIVE, CONFIG_ROCKCHIP_DMC and
CONFIG_CMD_DDR_TEST_TOOL.
RK1808/RK3399pro npu: enable CONFIG_CMD_DDR_TEST_TOOL.
When enable, it will create a 'ddr_test' command for user in U-Boot shell.
Change-Id: Iaa286e461d53b1caa4bcc069d37a7aad16a3e5e3
Signed-off-by: Tang Yun ping <typ@rock-chips.com>