sunxi: A10-OLinuXino-Lime support fixup

Fix:
-code indentation
-dram timings, the used cas and tpr0 - tpr2 were typical sun5i / sun7i
 settings, while they should be sun4i settings
-Properly sort boards.cfg entry
-Add status led support

Signed-off-by: Hans de Goede <hdegoede@redhat.com>