gallium: new shader cap bit for the amount of sampler views

Ever since introducing separate sampler and sampler view max this was really
missing.
Every driver but llvmpipe reports the same number as number of samplers for
now, so nothing should break.

Reviewed-by: Jose Fonseca <jfonseca@vmware.com>

src/gallium/drivers/softpipe/sp_screen.c

@@ -204,13 +204,14 @@ softpipe_get_shader_param(struct pipe_screen *screen, unsigned shader, enum pipe
    case PIPE_SHADER_GEOMETRY:
       switch (param) {
       case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
+      case PIPE_SHADER_CAP_MAX_SAMPLER_VIEWS:
          if (sp_screen->use_llvm)
             /* Softpipe doesn't yet know how to tell draw/llvm about textures */
             return 0;
-	 else
+         else
             return PIPE_MAX_SAMPLERS;
       default:
-	 if (sp_screen->use_llvm)
+         if (sp_screen->use_llvm)
             return draw_get_shader_param(shader, param);
          else
             return draw_get_shader_param_no_llvm(shader, param);