Revert "BDW: Change the default tiling mode to TILING_Y on BDW."
Revert "BDW: Change the default tiling mode to TILING_Y on BDW."

This reverts commit f2c57a46de4f51fa5d4c8e02cc751fce7ff417c8.

wdv4758h/beignet,zhenyw/beignet,freedesktop-unofficial-mirror/beignet,freedesktop-unofficial-mirror/beignet,freedesktop-unofficial-mirror/beignet,zhenyw/beignet,zhenyw/beignet,wdv4758h/beignet,wdv4758h/beignet,wdv4758h/beignet,zhenyw/beignet,zhenyw/beignet,freedesktop-unofficial-mirror/beignet,wdv4758h/beignet