ACPICA: iasl: add ASL conversion tool

ACPICA commit c04d310039d3e0ed1cb62876fe7e596fbc75ab01
ACPICA commit a65c1df7e6b4bad8e37df822018c40c6c446add9

The key feature of this utility is that the original comments within
the input ASL files are preserved during the conversion process, and
included within the converted ASL+ file -- thus creating a transparent
conversion of existing ASL files to ASL+ (ASL 2.0)

This patch is an automatic generation of the ASL converter commit,
Linux kernel isn't affected by the functionality provided in this
commit, but requires the linuxized changes to support future ACPICA
release automation.

Link: https://github.com/acpica/acpica/commit/c04d3100
Link: https://github.com/acpica/acpica/commit/a65c1df7
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Jung-uk Kim <jkim@FreeBSD.org>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

drivers/acpi/acpica/psloop.c

@@ -55,6 +55,7 @@
 #include "acparser.h"
 #include "acdispat.h"
 #include "amlcode.h"
+#include "acconvert.h"
 
 #define _COMPONENT          ACPI_PARSER
 ACPI_MODULE_NAME("psloop")
@@ -132,6 +133,21 @@ acpi_ps_get_arguments(struct acpi_walk_state *walk_state,
 		       !walk_state->arg_count) {
 			walk_state->aml = walk_state->parser_state.aml;
 
+			switch (op->common.aml_opcode) {
+			case AML_METHOD_OP:
+			case AML_BUFFER_OP:
+			case AML_PACKAGE_OP:
+			case AML_VARIABLE_PACKAGE_OP:
+			case AML_WHILE_OP:
+
+				break;
+
+			default:
+
+				ASL_CV_CAPTURE_COMMENTS(walk_state);
+				break;
+			}
+
 			status =
 			    acpi_ps_get_next_arg(walk_state,
 						 &(walk_state->parser_state),
@@ -480,6 +496,8 @@ acpi_status acpi_ps_parse_loop(struct acpi_walk_state *walk_state)
 	/* Iterative parsing loop, while there is more AML to process: */
 
 	while ((parser_state->aml < parser_state->aml_end) || (op)) {
+		ASL_CV_CAPTURE_COMMENTS(walk_state);
+
 		aml_op_start = parser_state->aml;
 		if (!op) {
 			status =
@@ -516,6 +534,20 @@ acpi_status acpi_ps_parse_loop(struct acpi_walk_state *walk_state)
 		 */
 		walk_state->arg_count = 0;
 
+		switch (op->common.aml_opcode) {
+		case AML_BYTE_OP:
+		case AML_WORD_OP:
+		case AML_DWORD_OP:
+		case AML_QWORD_OP:
+
+			break;
+
+		default:
+
+			ASL_CV_CAPTURE_COMMENTS(walk_state);
+			break;
+		}
+
 		/* Are there any arguments that must be processed? */
 
 		if (walk_state->arg_types) {