rockchip: board: Use a common USB Product ID for UMS

Change to use the common Product ID 0x0010 when the ums command is used.

This matches downstream vendor U-Boot and is a Product ID that tools
such as rkdeveloptool and RKDevTool will identify as MSC mode.

Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>