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H A Dmemcpy.S34fe8281d7323784544e94d2f7218f52b8a2899d Sun May 22 23:06:50 UTC 2011 Matthias Weisser <weisserm@arcor.de> arm: lib: memcpy: Do not copy to same address

In some cases (e.g. bootm with a elf payload which is already at the right
position) there is a in place copy of data to the same address. Catching this
saves some ms while booting.

Signed-off-by: Matthias Weisser <weisserm@arcor.de>