TI DaVinci: Remove references to SZ_xx

This patch removes the asm/sizes.h header file from being
included in the DaVinci SOC configs.
References to SZ_xx have been replaced by appropriate
bit shifted values.

Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
Acked-by: Wolfgang Denk <wd@denx.de>