Randall Spangler e6401d2e83 Initalize DMA before UART ...

This is in preparation for enabling DMA-based UART transfers, to
improve UART performance on STM32.

BUG=chrome-os-partner:20485
BRANCH=none
TEST=Boot pit.  Host commands should still be received; this verifies DMA
     is still operational.

Change-Id: Ibc3b2e2cd187547eb61b85e4a086704accd7f2fb
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/168810

2013-09-10 23:46:07 +00:00

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