intel: update genhw headers

genhw is maintained externally in https://github.com/olvaffe/envytools.
Changes that affect the driver include

 - state alignment macros are now in bytes, not in dwords
 - {DS,HS}_INVOCATION_COUNT are Gen7+ only
 - new GEN_EXTRACT() macro to extract a bitfield

v2: regenerate again to reflect latest changes in the external repo (minor
    naming fixes as well as addition of pixel interpolator definitions)
diff --git a/icd/intel/cmd_mi.c b/icd/intel/cmd_mi.c
index 87f6dff..6cd63a0 100644
--- a/icd/intel/cmd_mi.c
+++ b/icd/intel/cmd_mi.c
@@ -97,8 +97,8 @@
         /* well, we do not enable 3DSTATE_VF_STATISTICS yet */
         GEN6_REG_IA_PRIMITIVES_COUNT,
         GEN6_REG_IA_VERTICES_COUNT,
-        (cmd_gen(cmd) >= INTEL_GEN(7)) ? GEN6_REG_HS_INVOCATION_COUNT : 0,
-        (cmd_gen(cmd) >= INTEL_GEN(7)) ? GEN6_REG_DS_INVOCATION_COUNT : 0,
+        (cmd_gen(cmd) >= INTEL_GEN(7)) ? GEN7_REG_HS_INVOCATION_COUNT : 0,
+        (cmd_gen(cmd) >= INTEL_GEN(7)) ? GEN7_REG_DS_INVOCATION_COUNT : 0,
         0,
     };
     XGL_UINT i;