move target specific scripts to tools/targets/

tools/build_hooks/__init__.py

@@ -1,16 +0,0 @@
-"""
-mbed SDK
-Copyright (c) 2011-2013 ARM Limited
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
-"""

tools/targets/__init__.py

@@ -502,7 +502,7 @@ class RTL8195ACode:
     """RTL8195A Hooks"""
     @staticmethod
     def binary_hook(t_self, resources, elf, binf):
-        from tools.build_hooks.REALTEK_RTL8195AM import rtl8195a_elf2bin
+        from tools.targets.REALTEK_RTL8195AM import rtl8195a_elf2bin
         rtl8195a_elf2bin(t_self.name, elf, binf)
 ################################################################################