Build: corstone1000: enable corstone1000 and update bin offset for lava

Enables corstone1000 on CI. Also after creating the flash.bin with the gpt
layout the flash.bin must be loaded from the start of the flash.

Signed-off-by: Mohamed Omar Asaker <mohamed.omarasaker@arm.com>
Change-Id: I46f0404a4de717eda472e98e80ee5ee49784e8e5
1 file changed