gallium: rename TGSI tessellation processor types to match pipe shader names

I forgot to do this when pushing the interface changes.

Reviewed-by: Ilia Mirkin <imirkin@alum.mit.edu>

src/gallium/include/pipe/p_shader_tokens.h

@@ -43,8 +43,8 @@ struct tgsi_header
 #define TGSI_PROCESSOR_FRAGMENT  0
 #define TGSI_PROCESSOR_VERTEX    1
 #define TGSI_PROCESSOR_GEOMETRY  2
-#define TGSI_PROCESSOR_TESSCTRL  3
-#define TGSI_PROCESSOR_TESSEVAL  4
+#define TGSI_PROCESSOR_TESS_CTRL 3
+#define TGSI_PROCESSOR_TESS_EVAL 4
 #define TGSI_PROCESSOR_COMPUTE   5
 
 struct tgsi_processor