Add support for Nucleo-F446RE

Dependencies:   mbed

Revision:
11:50862903c3e3
Parent:
9:e764990e45df
diff -r 7af820d1e1df -r 50862903c3e3 mbed.bld
--- a/mbed.bld	Thu Nov 26 12:20:56 2015 +0000
+++ b/mbed.bld	Thu Nov 26 12:37:54 2015 +0000
@@ -1,1 +1,1 @@
-http://mbed.org/users/mbed_official/code/mbed/builds/4fc01daae5a5
\ No newline at end of file
+http://mbed.org/users/mbed_official/code/mbed/builds/165afa46840b
\ No newline at end of file