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/snmc/qs860t/u-boot.lds b/board/snmc/qs860t/u-boot.lds
index ce115f5..271d74a 100644
--- a/board/snmc/qs860t/u-boot.lds
+++ b/board/snmc/qs860t/u-boot.lds
@@ -59,9 +59,9 @@
 	cpu/mpc8xx/traps.o		(.text)
 	common/dlmalloc.o		(.text)
 	arch/ppc/lib/ppcstring.o		(.text)
-	lib_generic/vsprintf.o	(.text)
-	lib_generic/crc32.o		(.text)
-	lib_generic/zlib.o		(.text)
+	lib/vsprintf.o	(.text)
+	lib/crc32.o		(.text)
+	lib/zlib.o		(.text)
 	arch/ppc/lib/cache.o		(.text)
 	arch/ppc/lib/time.o		(.text)