i965/hiz: Convert gen{6,7}_hiz.h to gen{6,7}_blorp.h

This patch renames the gen6_hiz.h and gen7_hiz.h files to correspond
to the renames of the corresponding .cpp files (see previous commit).

Reviewed-by: Chad Versace <chad.versace@linux.intel.com>

src/mesa/drivers/dri/i965/brw_vtbl.c

@@ -49,8 +49,8 @@
 #include "brw_vs.h"
 #include "brw_wm.h"
 
-#include "gen6_hiz.h"
-#include "gen7_hiz.h"
+#include "gen6_blorp.h"
+#include "gen7_blorp.h"
 
 #include "glsl/ralloc.h"
 

src/mesa/drivers/dri/i965/gen6_blorp.cpp

@@ -31,7 +31,7 @@
 #include "brw_defines.h"
 #include "brw_state.h"
 
-#include "gen6_hiz.h"
+#include "gen6_blorp.h"
 
 /**
  * \name Constants for HiZ VBO

src/mesa/drivers/dri/i965/gen7_blorp.cpp

@@ -31,8 +31,8 @@
 #include "brw_defines.h"
 #include "brw_state.h"
 
-#include "gen6_hiz.h"
-#include "gen7_hiz.h"
+#include "gen6_blorp.h"
+#include "gen7_blorp.h"
 
 /**
  * \copydoc gen6_hiz_exec()