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/.gitignore b/.gitignore
index d73d627..07f32cc 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,6 +1,7 @@
 build*/
 subprojects/*
 !subprojects/acpi-power-state-daemon/
+!subprojects/bios-key/
 !subprojects/libcr51sign/
 !subprojects/metrics-ipmi-blobs/
 !subprojects/ncsid/