freedreno: s/unsigned/enum pipe_shader_type/

Reviewed-by: Edward O'Callaghan <funfunctor@folklore1984.net>

src/gallium/drivers/freedreno/freedreno_texture.h

@@ -32,7 +32,7 @@
 #include "pipe/p_context.h"
 
 void fd_sampler_states_bind(struct pipe_context *pctx,
-		unsigned shader, unsigned start,
+		enum pipe_shader_type shader, unsigned start,
 		unsigned nr, void **hwcso);
 
 void fd_set_sampler_views(struct pipe_context *pctx,