Incremental Install: Apply API whitelist check to P

Seems that some emulators require this even when just on
Android P.

Bug: 946194
Change-Id: Iad5811a54404bfcf46267d5c3f3a5f565f399ac1
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2098236
Auto-Submit: Andrew Grieve <agrieve@chromium.org>
Reviewed-by: Colin Blundell <blundell@chromium.org>
Commit-Queue: Colin Blundell <blundell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#749249}

build/android/incremental_install/installer.py

@@ -232,7 +232,7 @@ def Install(device, install_json, apk=None, enable_device_cache=False,
   def check_device_configured():
     target_sdk_version = int(apk.GetTargetSdkVersion())
     # Beta Q builds apply whitelist to targetSdk=28 as well.
-    if target_sdk_version >= 28 and device.build_version_sdk >= 29:
+    if target_sdk_version >= 28 and device.build_version_sdk >= 28:
       apis_allowed = ''.join(
           device.RunShellCommand(
               ['settings', 'get', 'global', 'hidden_api_policy'],