etnaviv: blt: Convert assert to real if
What does this MR do and why?
etnaviv: blt: Convert assert to real if
etna_try_blt_blit(..) returns if it is possible to do the blit
in hardware or not. When building mesa in debug mode this assert(..)
is hit many times.
Fixes the following piglits on GC7000L:
- spec@!opengl 1.0@gl-1.0-scissor-copypixels
- spec@nv_conditional_render@copypixels
- spec@!opengl 1.1@copypixels-draw-sync
- spec@!opengl 1.1@copypixels-sync
- spec@!opengl 1.1@depthstencil-default_fb-blit
- spec@!opengl 1.1@draw-copypixels-sync
- spec@!opengl 1.1@gl-1.1-xor-copypixels
Signed-off-by: Christian Gmeiner <cgmeiner@igalia.com>