intel: Rename GENx prefix in macros to GFXx in source files

Commands used to do the changes:
export SEARCH_PATH="src/intel src/gallium/drivers/iris src/mesa/drivers/dri/i965"
grep -E "GEN" -rIl src/intel/genxml | grep -E ".*py" |  xargs sed -ie "s/GEN\([%{]\)/GFX\1/g"
grep -E "[^_]GEN[[:digit:]]+" -rIl $SEARCH_PATH | grep -E ".*(\.c|\.h|\.y|\.l)" | xargs sed -ie "s/\([^_]\)GEN\([[:digit:]]\+\)/\1GFX\2/g"

Leave out renaming GFX12_CCS_E macros. They fall under renaming pattern like "_GEN[[:digit:]]+":
grep -E "GFX12_CCS_E" -rIl $SEARCH_PATH | xargs sed -ie "s/GFX12_CCS_E/GEN12_CCS_E/g"

Signed-off-by: Anuj Phogat <anuj.phogat@gmail.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/9936>

src/intel/compiler/gfx6_gs_visitor.cpp

@@ -125,7 +125,7 @@ gen6_gs_visitor::emit_prolog()
     *
     * So, what we do is to place PrimitiveID information in r1, which is always
     * delivered as part of the payload, but its only populated with data
-    * relevant for transform feedback when we set GEN6_GS_SVBI_PAYLOAD_ENABLE
+    * relevant for transform feedback when we set GFX6_GS_SVBI_PAYLOAD_ENABLE
     * in the 3DSTATE_GS state packet. That information can be obtained by other
     * means though, so we can safely use r1 for this purpose.
     */
@@ -505,7 +505,7 @@ gen6_gs_visitor::setup_payload()
    reg++;
 
    /* r1 is always part of the payload and it holds information relevant
-    * for transform feedback when we set the GEN6_GS_SVBI_PAYLOAD_ENABLE bit in
+    * for transform feedback when we set the GFX6_GS_SVBI_PAYLOAD_ENABLE bit in
     * the 3DSTATE_GS packet. We will overwrite it with the PrimitiveID
     * information (and move the original value to a virtual register if
     * necessary).