S4: copy bblst.bin and device-fip-header.bin form keys directory.

Change-Id: I71116b1d7160fbe56b5d27de3c15545c8d9a1e17
diff --git a/s4/s905w2/bb1st.bin b/s4/s905w2/bb1st.bin
old mode 100644
new mode 100755
Binary files differ
diff --git a/s4/s905w2/device-fip-header.bin b/s4/s905w2/device-fip-header.bin
old mode 100644
new mode 100755
Binary files differ