define BOARD_USE_LEGACY_UI for PDK build

- coresponding Android.mk will be changed later to use legacy UI when
  this is set true.

Change-Id: I919564d50158b2836d1a2597aafb446485b88cab
1 file changed
tree: f6537317e7b5e1b6f86d0ca62834be2ca42d6c7f
  1. overlay/
  2. AndroidProducts.mk
  3. BoardConfig.mk
  4. mini_x86.mk
  5. vendorsetup.sh