commit acc4959fc1 (Revert "i.MX28: Enable additional DRAM address bits") broke mx28evk boot. Fix it by properly adjusting the HW_DRAM_CTL29 register value. Suggested-by: Marek Vasut <marex@denx.de> Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Acked-by: Marek Vasut <marex@denx.de>