gem_exec_nop.c: add vebox test case

v2 (Ben):
Fixed whitespace,
s/HAS_BLT_RING/gem_has_vebox/
s/I915_EXEC_VEBOX/LOCAL_I915_EXEC_VEBOX

Signed-off-by: Zhong Li <zhong.li@intel.com>
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
1 file changed