Since USB_EHCI_SPLIT_ISO is now unconditionally enabled the
#ifndef CONFIG_USB_EHCI_SPLIT_ISO became wrong.
Reported-by: NRobert P. J. Day <rpjday@crashcourse.ca>
Signed-off-by: NAdrian Bunk <bunk@kernel.org>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>