librt: fix linking WRT pthreads

Linking order matters. Always did and still does today.
See how this makes the ugly and wrong hack to put pthread symbols into
librt _and_ linking librt against pthread moot?

Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

librt/Makefile.in

@@ -10,12 +10,11 @@ subdirs += librt
 CFLAGS-librt := -DNOT_IN_libc -DIS_IN_librt $(SSP_ALL_CFLAGS)
 
 LDFLAGS-librt.so := $(LDFLAGS)
+LIBS-librt.so := $(LIBS)
 ifeq ($(UCLIBC_HAS_THREADS_NATIVE),y)
-LDFLAGS-librt.so += $(top_builddir)lib/libdl.so $(top_builddir)lib/libpthread.so
+LIBS-librt.so += $(top_builddir)lib/libdl.so $(top_builddir)lib/libpthread.so
 endif
 
-LIBS-librt.so := $(LIBS)
-
 librt_FULL_NAME := librt-$(VERSION).so
 
 librt_DIR := $(top_srcdir)librt