[U-Boot] [PATCH] AM3517:EMIF4: fix SDRAM size to 256Mb

[Paulraj, Sandeep]

> 
> From: Vaibhav Hiremath <hvaibhav at ti.com>
> 
> With addition of "dram_init_banksize()" function from Heiko,Schocher
> (commit ID: 561142af20f1fd7b425d9425730014e656defb91), the DRAM size
> is getting configured wrongly to 512Mb (CS0 & CS1).
> So fix it to 256Mb.
> 
> Signed-off-by: Vaibhav Hiremath <hvaibhav at ti.com>
> ---
Pushed to u-boot-ti