i965: Pass pointer and end of assembly to brw_validate_instructions

This will allow us to more easily run brw_validate_instructions() on
shader programs we find in GPU hang error states.

Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>

src/intel/compiler/brw_eu.h

@@ -548,7 +548,8 @@ void brw_debug_compact_uncompact(const struct gen_device_info *devinfo,
                                  brw_inst *orig, brw_inst *uncompacted);
 
 /* brw_eu_validate.c */
-bool brw_validate_instructions(const struct brw_codegen *p, int start_offset,
+bool brw_validate_instructions(const struct gen_device_info *devinfo,
+                               void *assembly, int start_offset, int end_offset,
                                struct annotation_info *annotation);
 
 static inline int