AOSP/DevCamera - update the DevCamera test package version to target P (28) or higher.

Bug: 115499280

Test: manual - Ran the following tests on Pixel phone. Tested the DevCamera manually.

$ make DevCamera -j
  -rw-r--r-- 1 rtenneti primarygroup 87705 Dec 12 15:43 out/target/product/marlin/system/app/DevCamera/DevCamera.apk

$ adb install -r out/target/product/marlin/system/app/DevCamera/DevCamera.apk
   12-12 15:45:44.354 14633 15995 I ActivityTaskManager: START u0 {act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10200000 cmp=com.android.devcamera/.DevCameraActivity bnds=[47,1552][316,1896]} from uid 10044
   12-12 15:45:44.430 14633 14652 I ActivityManager: Start proc 25804:com.android.devcamera/u0a178 for activity com.android.devcamera/.DevCameraActivity
   12-12 15:45:44.550 25804 25804 V DevCamera_UI: onCreate
   ...
   12-12 15:45:48.275 25804 25804 V DevCamera_API2: Opening camera 0
   12-12 15:45:48.278 14557 21638 I CameraService: CameraService::connect call (PID -1 "com.android.devcamera", camera ID 0) for HAL version default and Camera API version 2
   ...
   12-12 15:45:48.586 25804 25853 V DevCamera_API2: STARTUP_REQUIREMENT Done opening camera 0. HAL open took: (310 ms)
   ...
   12-12 15:45:53.187 25804 25804 V DevCamera_API2: Closing camera 0
   12-12 15:45:53.662 25804 25804 V DevCamera_API2: Done closing camera 0

Change-Id: I82467dee01966d133f69d239fcfca43d831a4fde