1. Move WDOG3_BASE_ADDR to '#if !(defined(__ASSEMBLY__))'.
2. Add i.MX6UL LCDIF register base address. And Introduce
   LCDIF1_BASE_ADDR to support runtime check.
3. include <asm/imx-common/regs-lcdif.h> for imx-regs.h to avoid
   building error for mxsfb.c, since mxsfb.c use imx-regs.h.

Signed-off-by: Peng Fan <Peng.Fan@freescale.com>
Cc: Stefano Babic <sbabic@denx.de>