[PATCH] add sysfs info walk to udevinfo

[PATCH] add sysfs info walk to udevinfo

The option "-s" will get information about the major/minor,
the physical device, the bus value and the driver from sysfs for
all class and block devices:

kay@pim udev.kay]$ ./udevinfo -s

DEVPATH        '/sys/block/sda'
SUBSYSTEM      'block'
NAME           'sda'
MAJORMINOR     '8:0'
PHYSDEVPATH    '/sys/devices/pci0000:00/0000:00:1d.7/usb1/1-3/1-3:1.0/host2/target2:0:0/2:0:0:0'
PHYSDEVPATHBUS 'scsi'
DRIVER         'sd'

DEVPATH        '/sys/class/input/mice'
SUBSYSTEM      'input'
NAME           'mice'
MAJORMINOR     '13:63'

DEVPATH        '/sys/class/input/mouse0'
SUBSYSTEM      'input'
NAME           'mouse0'
MAJORMINOR     '13:32'

...