ARM: shmobile: lager: add i2c1, i2c2 pins

ARM: shmobile: lager: add i2c1, i2c2 pins

Add pinctrl definitions for i2c1 and i2c2 busses on the Lager board
to ensure these are setup correctly at initialisation time. The i2c0
and i2c3 busses are connected to single function pins.

Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
[horms+renesas@verge.net.au: Added shmobile to patch title]
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
(cherry picked from commit e1a2c4eb132018ce5b988c9ff5ba7a01e5494af5)
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>