usb: core: sysfs: convert sysfs snprintf to sysfs_emit

Fix up all sysfs show entries to use sysfs_emit
Signed-off-by: Xuezhi Zhang <zhangxuezhi1@coolpad.com>
Link: https://lore.kernel.org/r/20220624121238.134256-1-zhangxuezhi1@coolpad.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>