intel: Rename "gen_" prefix used in common code to "intel_"

This patch renames functions, structures, enums etc. with "gen_"
prefix defined in common code.

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/9413>

src/intel/common/intel_disasm.h

@@ -30,7 +30,7 @@
 extern "C" {
 #endif
 
-void gen_disassemble(const struct gen_device_info *devinfo,
+void intel_disassemble(const struct gen_device_info *devinfo,
                      const void *assembly, int start, FILE *out);
 
 #ifdef __cplusplus