Add PrintRecommendationService to hidden API package whitelist

This app builds directly against the platform. Add it to the whitelist.

Bug: 64382372
Test: make
Test: device boots
Change-Id: I16574374d2c233221cd1305f031f78aca1947f05
(cherry picked from commit 06c8a439f7641b59e3648f691ae1a1921244c68e)
diff --git a/data/etc/hiddenapi-package-whitelist.xml b/data/etc/hiddenapi-package-whitelist.xml
index fd1027c..be0372d 100644
--- a/data/etc/hiddenapi-package-whitelist.xml
+++ b/data/etc/hiddenapi-package-whitelist.xml
@@ -67,6 +67,7 @@
   <hidden-api-whitelisted-app package="com.android.pacprocessor" />
   <hidden-api-whitelisted-app package="com.android.phone" />
   <hidden-api-whitelisted-app package="com.android.pmc" />
+  <hidden-api-whitelisted-app package="com.android.printservice.recommendation" />
   <hidden-api-whitelisted-app package="com.android.printspooler" />
   <hidden-api-whitelisted-app package="com.android.providers.blockednumber" />
   <hidden-api-whitelisted-app package="com.android.providers.contacts" />