linux-mainline 3.2: update beagleboard defconfig

Link the TLC59108 driver statically so ULCD7 initialization occurs
automatically as it did before f0e2305c7e1 which removed the initialization
from u-boot.  (Angstrom-v2012.12 does not include this module by default.)

Signed-off-by: Peter A. Bigot <pab@pabigot.com>
omap3.inc: add support for DSP toolchain variable

ti-dsplink will not build without this.

Signed-off-by: Peter A. Bigot <pab@pabigot.com>