The USB recovery mode present in i.MX23 ROM emulates USB HID.  It needs this
quirk to behave properly.

Even if the official branding of the chip is Freescale i.MX23, I named it
Sigmatel STMP3780 since that's what the chip really is and it even reports
itself as STMP3780.
Signed-off-by: NMarek Vasut <marex@denx.de>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>