Add LOCAL_SOONG_LOGTAGS_FILES

LOCAL_SOONG_LOGTAGS_FILES is similar to LOCAL_LOGTAGS_FILES but it uses
full paths rather than relative paths, to correctly support Soong's
`android:"path"` which may produce paths outside module directories.

Bug: 336189540
Test: m out/soong/.intermediates/all-event-log-tags.txt
Test: m out/target/common/obj/all-event-log-tags.txt
Change-Id: I129b96f3e06036ded76d2657e25e895f8c946cfb
diff --git a/core/clear_vars.mk b/core/clear_vars.mk
index 5481d50..fb42878 100644
--- a/core/clear_vars.mk
+++ b/core/clear_vars.mk
@@ -264,6 +264,7 @@
 LOCAL_SOONG_LICENSE_METADATA :=
 LOCAL_SOONG_LINK_TYPE :=
 LOCAL_SOONG_LINT_REPORTS :=
+LOCAL_SOONG_LOGTAGS_FILES :=
 LOCAL_SOONG_MODULE_INFO_JSON :=
 LOCAL_SOONG_MODULE_TYPE :=
 LOCAL_SOONG_PROGUARD_DICT :=