IASL: Ignore IASL's "Missing dependency" warning

IASL compiler check for usage of _CRS, _DIS, _PRS, and _SRS objects:
 1) If _PRS is present, must have _CRS and _SRS
 2) If _SRS is present, must have _PRS (_PRS requires _CRS and _SRS)
 3) If _DIS is present, must have _SRS (_SRS requires _PRS, _PRS requires _CRS and _SRS)
 4) If _SRS is present, probably should have a _DIS (Remark only)
IASL will issue a warning for each missing dependency.
Ignore this warnings for existing ASL code and issue a message when the build is complete.

Change-Id: I28b437194f08232727623009372327fec15215dd
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/59880
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Reviewed-by: Martin Roth <martinroth@google.com>
diff --git a/Makefile.inc b/Makefile.inc
index beb7f0e..f584189 100644
--- a/Makefile.inc
+++ b/Makefile.inc
@@ -263,9 +263,26 @@
 # Redundant offset remarks are not useful in any way and are masking useful
 # ones that might indicate an issue so it is better to hide them.
 REDUNDANT_OFFSET_REMARK = 2158
+# IASL compiler check for usage of _CRS, _DIS, _PRS, and _SRS objects:
+#	1) If _PRS is present, must have _CRS and _SRS
+#	2) If _SRS is present, must have _PRS (_PRS requires _CRS and _SRS)
+#	3) If _DIS is present, must have _SRS (_SRS requires _PRS, _PRS requires _CRS and _SRS)
+#	4) If _SRS is present, probably should have a _DIS (Remark only)
+# A warning will be issued for each of these cases.
+# For existing ASL code, ignore this warnings
+IASL_MISSING_DEPENDENCY = 3141
 
 IASL_WARNINGS_LIST = $(EMPTY_RESOURCE_TEMPLATE_WARNING) $(REDUNDANT_OFFSET_REMARK)
 
+ifeq ($(CONFIG_IGNORE_IASL_MISSING_DEPENDENCY),y)
+	IASL_WARNINGS_LIST += $(IASL_MISSING_DEPENDENCY)
+build_complete::
+	printf "*** WARNING: The ASL code for this platform is incomplete.  Please fix it. ***\n"
+	printf "*** If _PRS is present, must have _CRS and _SRS ***\n"
+	printf "*** If _SRS is present, must have _PRS, _CRS, and _SRS ***\n"
+	printf "*** If _DIS is present, must have _SRS, _PRS, _CRS, and _SRS ***\n"
+endif
+
 IGNORED_IASL_WARNINGS = $(addprefix -vw , $(IASL_WARNINGS_LIST))
 
 define asl_template