move more checks out of librustc

Author: oli-obk

mk/crates.mk

@@ -102,7 +102,7 @@ DEPS_rustc_front := std syntax log serialize
 DEPS_rustc_lint := rustc log syntax
 DEPS_rustc_llvm := native:rustllvm libc std rustc_bitflags
 DEPS_rustc_metadata := rustc rustc_front syntax rbml
-DEPS_rustc_passes := syntax rustc core
+DEPS_rustc_passes := syntax rustc core rustc_front
 DEPS_rustc_mir := rustc rustc_front syntax
 DEPS_rustc_resolve := arena rustc rustc_front log syntax
 DEPS_rustc_platform_intrinsics := rustc rustc_llvm