Modify to support NEON for RTOS. (tools files)

We modified to support NEON of CMSIS-RTOS RTX for Cortex-A9 and fixed some bugs of it.

workspace_tools/toolchains/gcc.py

@@ -52,7 +52,7 @@ class GCC(mbedToolchain):
             self.cpu.append("-mthumb-interwork")
             self.cpu.append("-marm")
             self.cpu.append("-march=armv7-a")
-            self.cpu.append("-mfpu=vfpv3-d16")
+            self.cpu.append("-mfpu=vfpv3")
             self.cpu.append("-mfloat-abi=hard")
             self.cpu.append("-mno-unaligned-access")