PLAT/i2c: Fix the i2c device node name and add target property
PLAT/i2c: Fix the i2c device node name and add target property

Fix the i2c device node name that should show the functionality and
use a dedicated 'target' name property to tell targets being controlled.

Signed-off-by: Neelesh Gupta <0c847490c0192d1430997c36c35afbb478c33ca8@linux.vnet.ibm.com>
Signed-off-by: Stewart Smith <ec31ab75ddf977353c8f660f92ea8b23f64aef25@linux.vnet.ibm.com>

open-power/skiboot,legoater/skiboot,open-power/skiboot,stewart-ibm/skiboot,qemu/skiboot,ddstreet/skiboot,open-power/skiboot,mikey/skiboot,shenki/skiboot,shenki/skiboot,neelegup/skiboot,qemu/skiboot,qemu/skiboot,csmart/skiboot,csmart/skiboot,legoater/skiboot,stewart-ibm/skiboot,apopple/skiboot,shenki/skiboot,legoater/skiboot,qemu/skiboot,apopple/skiboot,csmart/skiboot,shenki/skiboot,ddstreet/skiboot,jk-ozlabs/skiboot,stewart-ibm/skiboot,mikey/skiboot,shenki/skiboot,cyrilbur-ibm/skiboot,apopple/skiboot,mikey/skiboot,jk-ozlabs/skiboot,neelegup/skiboot,legoater/skiboot,cyrilbur-ibm/skiboot,neelegup/skiboot,ddstreet/skiboot,legoater/skiboot,qemu/skiboot,jk-ozlabs/skiboot,open-power/skiboot,cyrilbur-ibm/skiboot,open-power/skiboot