etnaviv: set correct ts_clear_value for BLT engine

BLT engine uses all ones to clear TS, set ts_clear_value to match that.
Note: ts_clear_value is never used with BLT engine.

Signed-off-by: Jonathan Marek <jonathan@marek.ca>
Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com>
1 file changed