Vendor: Omni: Allow custom keys
* This change allow custom keys for rom signature generated with:
```
subject='/C=FR/O=Android/OU=Android/CN=Android/emailAddress=android@me.org'
for x in testkey releasekey platform shared media;
do ./development/tools/make_key ~/.android-certs/$x "$subject";
done
```
* Set ROM_KEYS_PATH env var to the folder containing keys.
Change-Id: Ia5a420fc3ff7120b88a5ed7413f78539b9d38629
diff --git a/build/core/certs.mk b/build/core/certs.mk
new file mode 100644
index 0000000..f00e275
--- /dev/null
+++ b/build/core/certs.mk
@@ -0,0 +1,5 @@
+# Allow custom build keys
+ifneq (${ROM_KEYS_PATH},)
+ PRODUCT_DEFAULT_DEV_CERTIFICATE := ${ROM_KEYS_PATH}/releasekey
+ PRODUCT_EXTRA_RECOVERY_KEYS := $(PRODUCT_DEFAULT_DEV_CERTIFICATE)
+endif