v3d: disable lowering of indirect inputs

V3D can do indirect inputs so we don't need it. Also, the lowering
produces horrible if-ladder code that is particularly bad for geometry
shaders where inputs are always arrays and shader bodies usually have
a loop indexing into them.

This fixes a couple of geometry shader tests in CTS that would fail to
register allocate otherwise.

There are no changes in shader-db.

Reviewed-by: Alejandro Piñeiro <apinheiro@igalia.com>

src/gallium/drivers/v3d/v3d_screen.c

@@ -334,6 +334,7 @@ v3d_screen_get_shader_param(struct pipe_screen *pscreen, unsigned shader,
         case PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED:
                 return 0;
         case PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR:
+                return 1;
         case PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR:
                 return 0;
         case PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR: