del userdata part

hc

2023-03-07 b7c0d7ef5080a876d1e2a044d0a51dcb0e0bcf1e

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BR2_arm=y
BR2_cortex_a17=y
BR2_ARM_FPU_VFPV4=y
BR2_PACKAGE_RK3288=y
BR2_ROOTFS_OVERLAY="board/rockchip/rk3288/fs-overlay/"