[asan] refactoring: don't #include <sys/mman.h> in non-os-specific files

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@147328 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/asan/asan_internal.h b/lib/asan/asan_internal.h
index 041aa3f..d0790a7 100644
--- a/lib/asan/asan_internal.h
+++ b/lib/asan/asan_internal.h
@@ -88,9 +88,10 @@
 // asan_linux.cc / asan_mac.cc
 void *AsanDoesNotSupportStaticLinkage();
 int AsanOpenReadonly(const char* filename);
-void *asan_mmap(void *addr, size_t length, int prot, int flags,
-                int fd, uint64_t offset);
 
+void *AsanMmapFixedNoReserve(uintptr_t fixed_addr, size_t size);
+void *AsanMmapFixedReserve(uintptr_t fixed_addr, size_t size);
+void *AsanMprotect(uintptr_t fixed_addr, size_t size);
 void *AsanMmapSomewhereOrDie(size_t size, const char *where);
 void AsanUnmapOrDie(void *ptr, size_t size);