davinci: omapl138_lcdk: use environment variables for memory addresses

Use environment variables for various memory addresses
used on OMAP-L138 LCDK board. This makes it easy to
customize the boot process.

Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Reviewed-by: Lukasz Majewski <lukma@denx.de>
Reviewed-by: Tom Rini <trini@konsulko.com>
1 file changed