am 1521cd6e: Merge change 8015 into donut

Merge commit '1521cd6e657ba4efa9382ab73d3cbba3bdf50ead'

* commit '1521cd6e657ba4efa9382ab73d3cbba3bdf50ead':
  Reset the mDpiX and mDpiY values when qemu.sf.lcd_density is defined.