Repair the USB detection on ipods and H10s which was broken by commit 14470.  The intention is that when the experimental HAVE_USBSTACK is not defined, the old (pre-14470) code is run.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@14481 a1c6a512-1295-4272-9138-f99709370657
3 files changed