switch gonk-misc from frozen commit to tip of v1-train branch on v1-train branch r=mwu

<jhford> mwu: any objections to pointing gonk-misc to HEAD of v1-train/v1.0.1 for the v1-train/v1.0.1 branches?
<mwu> jhford: that seems like the sane thing to do.
<jhford> may i r=mwu that?
<mwu> jhford: go for it