usb: fix ips1760-hcd printk format warning

Fix printk format build warning and grammar typo on same line.

drivers/usb/host/isp1760-hcd.c:300: warning: format '%lu' expects type 'long unsigned int', but argument 4 has type 'size_t'

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>