Rename lib_generic/ to lib/

Now that the other architecture-specific lib directories have been
moved out of the top-level directory there's not much reason to have the
'_generic' suffix on the common lib directory.

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
diff --git a/board/netstar/Makefile b/board/netstar/Makefile
index c435762..5773c13 100644
--- a/board/netstar/Makefile
+++ b/board/netstar/Makefile
@@ -72,7 +72,7 @@
 $(obj)crcit.o:		crcit.c
 	$(HOSTCC) $(HOSTCFLAGS) -o $@ -c $<
 
-$(obj)crc32.o:		$(SRCTREE)/lib_generic/crc32.c
+$(obj)crc32.o:		$(SRCTREE)/lib/crc32.c
 	$(HOSTCC) $(HOSTCFLAGS) -DUSE_HOSTCC -I$(TOPDIR)/include \
 		-o $@ -c $<