libdrm-etnaviv does not need and use such flags

Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com>
add etna_util.h and make use of it

Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com>
fix compile of etna_compiler.c

Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com>
make etna_screen_fence_finish(..) a no-op and mark it as TODO

Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com>
we need the number of pixel pipes

Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com>
with small steps to success

Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com>
convert etna_compile_shader_object(..) to return a bool

Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com>
add needed functions for etna_texture.c

Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com>
add etna_cfloat_to_uint8(..) needed by etna_zsa.c

Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com>