intel/disasm: Label support in shader disassembly for UIP/JIP

Shader instructions which use UIP/JIP now get formatted with a label
in addition with immediate value, labels have "LABEL%d" format.

v2: - Consider brw_jump_scale when calculating label's offset

From: "Lonnberg, Toni" <toni.lonnberg@intel.com>
Signed-off-by: Danylo Piliaiev <danylo.piliaiev@globallogic.com>
Reviewed-by: Sagar Ghuge <sagar.ghuge@intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4245>

src/intel/compiler/test_eu_validate.cpp

@@ -110,7 +110,7 @@ validate(struct brw_codegen *p)
                                         p->next_insn_offset, disasm);
 
    if (print) {
-      dump_assembly(p->store, disasm, NULL);
+      dump_assembly(p->store, 0, p->next_insn_offset, disasm, NULL);
    }
    ralloc_free(disasm);