Update 51-android.rules

Hello and thank you for maintaining this list.
I own the Intl. Samsung Galaxy S4 GT-I9500 Exynos Octo Core and was having a hard time to make it recognized within Windows so I can use Odin to root it.
The issue was that my current kernel [OS: Chakra, kernel 3.9.2-CHAKRA] detects it as 04e8:6860 while it's correct ID is 04e8:685d (I got aware of this later when rebooted the smartphone into recovery mode), once I corrected the ID I created a new rule following advice here: http://developer.android.com/tools/device.html and then I finally was able to make the Windows guest recognize it.

Note: this is my first ever contribution to a GIT project/repository, please excuse if there's anything wrong with it :/

Best regards.
Merge pull request #20 from msx/patch-1

Update 51-android.rules