Check for /sys/module/usbcore before modprobe usbcore
Check for /sys/module/usbcore before modprobe usbcore

The use of /proc/bus/usb to mount usbfs has been deprecated, but
the option is still available in the kernel.  The new approach is
to use /sys.  We should not modprobe usbcore if either /proc/bus/usb
or /sys/module/usbcore exist.

X-Gentoo-Bug: 363551
X-Gentoo-Bug-URL: http://bugs.gentoo.org/show_bug.cgi?id=363551
Signed-off-by: Anthony G. Basile <dd506e32bc562796df922793870fd5ab238a58ad@gentoo.org>

OpenRC/openrc,williamh/openrc,OpenRC/openrc,dwfreed/openrc,williamh/openrc,OpenRC/openrc,dwfreed/openrc,dwfreed/openrc,williamh/openrc