ARM: shmobile: r8a7779: add missing __initdata

This patch adds missing __initdata to driver data/resource
which are used from platform_device_register_xxx()

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>