I pushed new (rebased) patches to git repository on gitorious.
* deleted ali patch which relocated u-boot in reset function (I moved and rewritted code to rx51.c)
* added patch which enable appending atags to existing (based on mirakels patch)
* rebased on top of u-boot master again

In this build I see problem with eMMC again - not working. But I did not change anything with eMMC, so problem must be in upstream code...

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Two things missing for sending patches to upstream:
1. fix eMMC support again
2. correct display brightness support