S4: add bb1st.bin and device-fip-header.bin for chipset of s905y4z

Change-Id: If49c57987589f6d0bf5f5f56285abcd1fa61f640
Signed-off-by: Bo Lv <bo.lv@amlogic.com>
diff --git a/s4/s905y4z/bb1st.bin b/s4/s905y4z/bb1st.bin
new file mode 100755
index 0000000..5131c2c
--- /dev/null
+++ b/s4/s905y4z/bb1st.bin
Binary files differ
diff --git a/s4/s905y4z/device-fip-header.bin b/s4/s905y4z/device-fip-header.bin
new file mode 100755
index 0000000..7120884
--- /dev/null
+++ b/s4/s905y4z/device-fip-header.bin
Binary files differ