build_system: add scatter_load.mk for multi-segment load. [1/1]

PD#SWPL-97347

Problem:
multi-segment of RTOS.

Solution:
add scatter.mk for multi-segment load.

Verify:
N/A

Signed-off-by: shijie.xiong <shijie.xiong@amlogic.com>
Change-Id: Ibd62f2d998521c7ec9f3a5142b0b2f4d630b8cfb
2 files changed