add support 4g -- >ppp

hc

2023-11-24 2b26ab132d1b33b91c84c6d732456200e8c5ee77

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BR2_TOOLCHAIN_BUILDROOT_GLIBC=y
BR2_TOOLCHAIN_BUILDROOT_VENDOR="rockchip"
BR2_TOOLCHAIN_BUILDROOT_CXX=y
BR2_GCC_ENABLE_LTO=y
BR2_GCC_ENABLE_OPENMP=y
BR2_GCC_ENABLE_GRAPHITE=y