It's clearly not the standard transitive use. But fwiw OED lists this intransitive use with prepositional object at sense 2d:
2d. intransitive. To give information; to report, relate.
1569 T. Norton To Queenes Deceiued Subj. sig. Bjv Finally, they enforme of a great purpose of strangers to correcte and chasten vs to the hazard of the Realme, which they wil auoyd by hazarding it themselues.
a1616 Shakespeare Macbeth (1623) i. v. 32 Is not thy Master with him? who, wer't so, Would haue inform'd for preparation.
1656 T. Stanley Hist. Philos. II. iv. facing p. 4 They held that the Senses inform not alwaies truly.
1683 N. Luttrell Diary in Brief Hist. Relation State Affairs (1857) I. 287 Letters from Hungary inform of the good news of the emperors forces..haveing taken Gran.
1741 in G. Ogle tr. Chaucer Canterbury Tales II. 107 Now, Goddess, entring, view the Dome of State, Do thou inform, and give me to relate.
1837 Family Mag. 456/2 The privateer perceiving his change of course, instantly put up her helm also, and despatching a forty-two pound shot to inform of that fact, gave him chase.
?1877 J. J. MacDonald Poems 14 Science informs of a place that's below Whose nature inspires us with nothing but woe.
1961 Times 24 May 8/6 Norman Herbert Jones..pleaded Not Guilty to..failing to notify flight plans at Denham, Buckinghamshire, and to inform of his landing at Denham.
1989 Mod. Law Rev. 52 797 The basis of the patient's claim is essentially the doctor's failure to inform of risks.
1997 Integrated Strategies for Safety & Environment (O.E.C.D.) 71 The individual route guidance system for cars..informs about car parks with vacancies and recommends switching to public transport as appropriate.