davinci: omapl138_lcdk: switch to using TI_COMMON_CMD_OPTIONS

Now that we support using TI_COMMON_CMD_OPTIONS,
we dont have to enable a number of commands explicitly
in the defconfig if we enable TI_COMMON_CMD_OPTIONS.

Enable TI_COMMON_CMD_OPTIONS and regenerate the defconfig
using "make savedefconfig".

CMD_GPIO has been kept disabled because there is no GPIO
support (yet) on OMAP-L138 LCDK.

Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>