Makefile: create softlink to debugfs

/dbg directory and mounting it is old style, we already have it in
/sys/kernel/debug. So, just softlink /d to /sys/kernel/debug.

Signed-off-by: Nishanth Menon <nm@ti.com>
Packages: Update to latest.

busybox - 1_12_0-3783-g5a7e337
linux-2.6 - v3.10-rc6
u-boot - v2013.07-rc1
omap-u-boot-utils - v0.2.0-30-g4737a51

Update busybox config file for the same while at it.

Signed-off-by: Nishanth Menon <nm@ti.com>
configs: beagle/beaglexm: support uEnv.txt

update the defconfig for the latest support.

Signed-off-by: Nishanth Menon <nm@ti.com>
configs: panda/pandaes: consolidate config files

Most of the stuff we need is already in u-boot defaults so start using
uEnv.txt. Also use zImage.

Use a single build for panda and pandaes. simpler to work with.
While at it, get rid of old style cmd files as well.

Signed-off-by: Nishanth Menon <nm@ti.com>
README: update information about compiler

And minor corrections while at it.

Signed-off-by: Nishanth Menon <nm@ti.com>
configs: am35xx: update to zImage

Signed-off-by: Nishanth Menon <nm@ti.com>