enbale ch343 driver in config

hc

2023-08-21 fc437ccf3419c424092701f3d883215fa4552a8b

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config BR2_PACKAGE_MPFR
    bool "mpfr"
    select BR2_PACKAGE_GMP
    help
      C library for multiple-precision floating-point computations
      with exact rounding.
 
      http://www.mpfr.org/