RTOS_SDK: add select board for s5 [1/4]

PD#SWPL-78344

Problem:
S5 need boot uboot

Solution:
add select board for s5

Verify:
compile pass

Change-Id: Iaa4649b75617a026693a36e6adf0a743b8d66f3b
Signed-off-by: Bo Lv <bo.lv@amlogic.com>
1 file changed
tree: 7134fbb9c8b7bab949927b222d854ccfe981e8d3
  1. cmake/
  2. key/
  3. .gitignore
  4. build_combination.in
  5. Makefile
  6. symtable.mk