dts/ls2080a: Update Simulator DTS to add support of various peripherals

This patch updates the LS2080a simulator DTS to add support of various
peripherals which are supported on the simulator platform and explicitly
disables those which are yet not supported on the platform.

Signed-off-by: Bhupesh Sharma <bhupesh.sharma@freescale.com>
Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>