lib: Integrate abi.h into int_lib.h, there aren't good enough reasons for this extra complexity.

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@144660 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/fp_lib.h b/lib/fp_lib.h
index 6c9455a..de5f17f 100644
--- a/lib/fp_lib.h
+++ b/lib/fp_lib.h
@@ -24,6 +24,7 @@
 #include <stdint.h>
 #include <stdbool.h>
 #include <limits.h>
+#include "int_lib.h"
 
 #if defined SINGLE_PRECISION