libopencm3/libopencm3 — pull request #161 by wpwrak (2013-06-16 16:53:41+00:00)
Title: cpu/arm/stm32-ocm3/debug-uart-arch.h: add USART6 (STM32F2, STM32F4)

This adds the definitions for the USART6 found in STM32F2 and STM32F4 devices.
Lightly tested on an Olimex STM32-E407.