manifest: add omni external/aac

Change-Id: Id8e887ab64367ea2cc61b494ac5a887df9bb008f
diff --git a/omni-aosp.xml b/omni-aosp.xml
index 68d20ca..6d4f117 100644
--- a/omni-aosp.xml
+++ b/omni-aosp.xml
@@ -26,6 +26,7 @@
 
   <project path="development" name="android_development" remote="omnirom" revision="android-8.1" groups="pdk-cw-fs,pdk-fs" />
 
+  <project path="external/aac" name="android_external_aac" remote="omnirom" revision="android-8.1" />
   <project path="external/e2fsprogs" name="android_external_e2fsprogs" remote="omnirom" revision="android-8.1" />
   <project path="external/mksh" name="android_external_mksh" remote="omnirom" revision="android-8.1" />
   <project path="external/tinycompress" name="android_external_tinycompress" remote="omnirom" revision="android-8.1" />
diff --git a/remove.xml b/remove.xml
index 216eafc..590e655 100644
--- a/remove.xml
+++ b/remove.xml
@@ -53,6 +53,7 @@
   <remove-project name="device/linaro/hikey-kernel" />
   <remove-project name="device/sample" />
 
+  <remove-project name="platform/external/aac" />
   <remove-project name="platform/external/e2fsprogs" />
   <remove-project name="platform/external/libnfnetlink" />
   <remove-project name="platform/external/libnetfilter_conntrack" />