T5M: rtos_sdk add t5m board ay301 and ay309 [1/3]

PD#SWPL-105664

Problem:
rtos_sdk t5m board is only t5m_skt.

Solution:
rtos_sdk add t5m board ay301 and ay309, delete t5m_skt.

Verify:
local build pass.

Change-Id: I90fee2842712f8277b89708611f530edcdfb9dd2
Signed-off-by: bangzheng.liu <bangzheng.liu@amlogic.com>
diff --git a/build_combination.in b/build_combination.in
index fb5fe98..6016490 100644
--- a/build_combination.in
+++ b/build_combination.in
@@ -3,7 +3,8 @@
 riscv t5d am301_t950d4 aocpu
 riscv t5w at301_t962d4 aocpu
 riscv t5w at309_t962d4 aocpu
-riscv t5m t5m_skt aocpu
+riscv t5m ay301_t963d4 aocpu
+riscv t5m ay309_t963d4 aocpu
 riscv s5 ax201_s928x aocpu
 riscv s5 ax208_s928x aocpu
 riscv s5 ax209_s928x aocpu