Make hostapd optional

This is to mitigate build breakage.

Fix: 221164554
Bug: 207076973
Change-Id: Iaa6a79ea7a313356806c77575302c7b10e22e3fa
diff --git a/device_framework_matrix_product.xml b/device_framework_matrix_product.xml
index 72d536f..2ac454a 100644
--- a/device_framework_matrix_product.xml
+++ b/device_framework_matrix_product.xml
@@ -31,7 +31,7 @@
             <instance>dual</instance>
         </interface>
     </hal>
-    <hal format="aidl">
+    <hal format="aidl" optional="true">
         <name>android.hardware.wifi.hostapd</name>
         <version>1</version>
         <interface>