debug: Include system in assert string

Change-Id: Id709cef0bfdb7cc1f849a5fb43e9d4f43c28272b
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/57706
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Antonio Maiorano <amaiorano@google.com>
Commit-Queue: Ben Clayton <bclayton@google.com>

src/debug.h

@@ -115,7 +115,8 @@ class InternalCompilerError {
   do {                                                   \
     if (!(condition)) {                                  \
       tint::diag::List diagnostics;                      \
-      TINT_ICE(system, diagnostics) << "TINT_ASSERT(" << #condition << ")"; \
+      TINT_ICE(system, diagnostics)                      \
+          << "TINT_ASSERT(" #system ", " #condition ")"; \
     }                                                    \
   } while (false)