Add support for Canon PowerShot S120 about lensfun HOT 3 CLOSED

<lens>
<maker>Canon</maker>
<model>Canon PowerShot S120 &amp; compatibles</model>
<model lang="en">fixed lens</model>
<model lang="de">festes Objektiv</model>
<mount>canonS120</mount>
<cropfactor>4.62</cropfactor>
<aspect-ratio>4:3</aspect-ratio>
<calibration>
    <!-- Refers to 4:3 RAW images. -->
    <distortion model="ptlens" focal="5.2" a="0.03458" b="-0.14652" c="-0.00567" />
    <distortion model="ptlens" focal="6" a="0.02428" b="-0.11282" c="0.00044" />
    <distortion model="ptlens" focal="7.5" a="0.00729" b="-0.05338" c="-0.00784" />
    <distortion model="ptlens" focal="10.8" a="0" b="-0.01923" c="0" />
    <distortion model="ptlens" focal="21.7" a="-0.00889" b="0.02672" c="-0.03212" />
    <distortion model="ptlens" focal="26" a="0" b="-0.00284" c="0" />
    <tca model="poly3" focal="5.2" vr="1.0006" vb="1.0005" />
    <tca model="poly3" focal="6" br="0.0007064" vr="0.9997865" bb="-0.0009831" vb="1.0024057" />
    <tca model="poly3" focal="7.5" br="0.0002859" vr="0.9999269" bb="-0.0007185" vb="1.0019609" />
    <tca model="poly3" focal="10.8" br="0.0001012" vr="1.0000603" bb="0.0000902" vb="1.0003115" />
    <tca model="poly3" focal="21.7" br="-0.0001198" vr="1.0005061" bb="-0.0000715" vb="1.0003314" />
    <tca model="poly3" focal="26" br="0.0000121" vr="1.0005797" bb="0.0000653" vb="0.9999953" />
</calibration>
</lens>