Add size check on PPS#policy am: 1fefc4c099

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/modules/Wifi/+/22633470

Change-Id: I10940317c655574de28696fbe3572ad62b306fb6
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>