S1A: PXP Bringup Bootloader BL30 code portinig [2/3]

PD#SWPL-119444

Problem:
S1A PXP Bringup Bootloader BL30.

Solution:
Code porting from S4, S5 and ucode.

Verify:
Test in z1.

Change-Id: I3cff06c337f720e516def5ca3eea9b13c5988af4
Signed-off-by: bangzheng.liu <bangzheng.liu@amlogic.com>
diff --git a/build_combination.in b/build_combination.in
index efe77d5..4a1e417 100644
--- a/build_combination.in
+++ b/build_combination.in
@@ -11,6 +11,7 @@
 riscv t5m ay301_t963d4 aocpu
 riscv t5m ay309_t963d4 aocpu
 riscv txhd2 txhd2_skt aocpu
+riscv s1a s1a_skt aocpu
 riscv s5 ax201_s928x aocpu
 riscv s5 ax208_s928x aocpu
 riscv s5 ax209_s928x aocpu