manifest: add omni hardware/libhardware

Change-Id: I6f8989e7ac51390b1c67035db0767f25b62c57d7
diff --git a/omni-aosp.xml b/omni-aosp.xml
index ca2f674..d69770e 100644
--- a/omni-aosp.xml
+++ b/omni-aosp.xml
@@ -32,6 +32,7 @@
   <project path="frameworks/opt/telephony" name="android_frameworks_opt_telephony" remote="omnirom" revision="android-8.0" />
 
   <project path="hardware/invensense" name="android_hardware_invensense" remote="omnirom" revision="android-8.0" />
+  <project path="hardware/libhardware" name="android_hardware_libhardware" remote="omnirom" revision="android-8.0" />
   <project path="hardware/qcom/audio" name="android_hardware_qcom_audio" remote="omnirom" revision="android-8.0" />
   <project path="hardware/qcom/display" name="android_hardware_qcom_display" remote="omnirom" revision="android-8.0" />
   <project path="hardware/qcom/media" name="android_hardware_qcom_media" remote="omnirom" revision="android-8.0" />