Last user of this option went away in commit:
fdc7718999 ("board: usb_a9263: Update to support DT and DM")
Change-Id: Id05869deccb88c1102700dd5af58a8c249e3e9e2
Signed-off-by: Tuomas Tynkkynen <tuomas.tynkkynen@iki.fi>
Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
(cherry picked from commit c68c03f52badc90951dbf8a054c0e500e04bf365)