Log atom for device orientation change

To let other metrics use slice_by_state with the orientation info.

Bug: 342367404
Flag: EXEMPT add log
Test: adb shell cmd stats print-logs
      adb logcat | grep statsd | grep "(906)"
      Rotate device to landscape and portrait. The log will contain
        (906)0x10000->2[I][EXCLUSIVE]
        (906)0x10000->1[I][EXCLUSIVE]
Change-Id: I97f2e076b319f95843217571151f43a9e07ce77a