feat(qemu-sbsa): configure RMM manifest based on system RAM

The RMM manifest needs to reflect the amount of RAM available on the
system.  Since system RAM is based on user input and reflected in the
device tree, get the information from there rather than using hard coded
values.

Change-Id: I63f090c1c04d9addfcd7a349450735728fa88ed0
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
1 file changed