SYSTEM/app/Gallery2/Gallery2.apk app - update the version to target P (28) or higher.

SYSTEM/app/Gallery2/Gallery2.apk app - update the version to target P (28) or higher.

Bug: 115499280
Bug: 119501125

Test: manual - Tested the Gallery UI manually on Pixel phone.

$ make -j 40
  -rw-r--r-- 1 rtenneti primarygroup 5501194 Jan  4 15:54 out/target/product/marlin/system/app/Gallery2/Gallery2.apk

$ aapt list -a out/target/product/marlin/system/app/Gallery2/Gallery2.apk | grep SdkVersion
    A: android:compileSdkVersion(0x01010572)=(type 0x10)0x1c
    A: android:compileSdkVersionCodename(0x01010573)="Q" (Raw: "Q")
      A: android:minSdkVersion(0x0101020c)="Q" (Raw: "Q")
      A: android:targetSdkVersion(0x01010270)=(type 0x10)0x1c

$ adb install -r -d out/target/product/marlin/system/app/Gallery2/Gallery2.apk

Change-Id: I33ca064531724b25798251b97fc7a3b71b02fb31