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/freescale/m52277evb/u-boot.spa b/board/freescale/m52277evb/u-boot.spa
index 23d5710..6d916d8 100644
--- a/board/freescale/m52277evb/u-boot.spa
+++ b/board/freescale/m52277evb/u-boot.spa
@@ -58,7 +58,7 @@
     cpu/mcf5227x/start.o	(.text)
     cpu/mcf5227x/libmcf5227x.a	(.text)
     arch/m68k/lib/libm68k.a		(.text)
-    lib_generic/libgeneric.a	(.text)
+    lib/libgeneric.a	(.text)
     common/cmd_mem.o		(.text)
     common/main.o		(.text)