update iotd for infrared detect

guowenxue

2021-04-22 4ff5fe054d3e9db5edf1eb8e9114729b5f7918a3

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