chewitt: I did it. with LE image you point I boot my N2 and see: 
1. there are /dev/rtc0 and /dev/rtc1
2. hwclock can read both, but can write only rtc1, error `hwclock: ioctl 0x4024700a failed: Invalid argument` trying to set time to rtc0
3. rtc0 is default for hwclock, /dev/rtc→/dev/rtc0