thermal: move the subprocess import to the function that uses it
thermal: move the subprocess import to the function that uses it

ARM-software/trappy,joelagnel/trappy,JaviMerino/trappy,bjackman/trappy,joelagnel/trappy,sinkap/trappy,derkling/trappy,ARM-software/trappy,ARM-software/trappy,joelagnel/trappy,joelagnel/trappy,derkling/trappy,JaviMerino/trappy,bjackman/trappy,ARM-software/trappy,JaviMerino/trappy,bjackman/trappy,sinkap/trappy,sinkap/trappy,bjackman/trappy,sinkap/trappy,derkling/trappy