nv41/ns50 shared linux config: reenable I2C, not even sure if needed

git difftool -d HEAD^ to check config against previous version (librem shared config), noticed I2C options being maybe relevant, added them back in

Then saved with make BOARD=nitropad-ns50 linux.modify_and_save_oldconfig_in_place

Signed-off-by: Thierry Laurion <[email protected]>

Author: tlaurion