rtc: rtc-m48t86: add DT hooks

Signed-off-by: Alexander Clouter <alex@digriz.org.uk>
arm: update ts72xx.c/ts78xx-setup.c to use new rtc-m48t86

Signed-off-by: Alexander Clouter <alex@digriz.org.uk>
arm: orion5x: hook in the RTC into the DT for the TS-7800

Signed-off-by: Alexander Clouter <alex@digriz.org.uk>
added ioport include and fix platform_device struct
added ioport include and fix platform_device struct