bios-key: import from gBMC

Add BIOS public key to google-misc

Change-Id: I9e4c993f92540aff6437c4d032f34505b8cabe09
Signed-off-by: Willy Tu <wltu@google.com>
diff --git a/bios-key b/bios-key
new file mode 100644
index 0000000..ce61e52
--- /dev/null
+++ b/bios-key
@@ -0,0 +1 @@
+./subprojects/bios-key/
\ No newline at end of file