IASL: Correct warning message for IASL missing dependency

Warning for _SRS includes _SRS.
Warning for _DIS includes must have _SRS twice.

Remove requirement _SRS for _SRS is present.
Removed second _SRS for _DIS is present.

BUG=N/A
TEST=Verify correct message on built of facebook FBG1701

Change-Id: I1be740354b159e931e41323aef14e160cc09af19
Signed-off-by: Frans Hendriks <fhendriks@eltan.com>ยด
Reviewed-on: https://review.coreboot.org/c/coreboot/+/63250
Reviewed-by: Erik van den Bogaert <ebogaert@eltan.com>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/Makefile.inc b/Makefile.inc
index f746ef9..6b1c45c 100644
--- a/Makefile.inc
+++ b/Makefile.inc
@@ -277,8 +277,8 @@
 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"
+	printf "*** If _SRS is present, must have _PRS and _CRS ***\n"
+	printf "*** If _DIS is present, must have _SRS, _PRS and _CRS ***\n"
 endif
 
 IGNORED_IASL_WARNINGS = $(addprefix -vw , $(IASL_WARNINGS_LIST))