ARM: shmobile: r8a7740: Use rmobile_add_devices_to_domains()

ARM: shmobile: r8a7740: Use rmobile_add_devices_to_domains()

Use a table and the rmobile_add_devices_to_domains() helper function to
add all platform devices to their power domains at once, which is more
size-efficient than calling rmobile_add_device_to_domain() explicitly
for all devices individually.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
(cherry picked from commit c839f93bf8468f4380056d0638e3cba0488bb190)
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>