update led and gpio program

guowenxue

2021-11-03 1a128c78e4119cae8d35b661149a12d0fd083b1a

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all:
    sed -i -e "s|^CROSSTOOL=.*|CROSSTOOL=${CROSSTOOL}|g" build.sh
    @bash build.sh
 
distclean: 
    @bash build.sh clean