u-boot: ti-v2015.07 updates (kernel: 4.1.13-ti-r30++)

A big change has happened, where u-boot/kernel need to resync:

u-boot:
http://git.ti.com/gitweb/?p=ti-u-boot/ti-u-boot.git;a=commit;h=d934a4af404585b4a4543ad670aaa7bd9bedb2cf

kernel:
http://git.ti.com/gitweb/?p=ti-linux-kernel/ti-linux-kernel.git;a=commit;h=ff830cc773cdd344bb0e92ea9e9b1fbf6c708aa6

So, make sure you update u-boot "BEFORE" booting "r30"... (Sunday's
Nov 15th image will have this new u-boot by default)

ti-v2015.07-r15: usb/scsi boot fixes

sudo ./update_bootloader.sh

UBOOT Bootloader: u-boot-beagle_x15_ti-v2015.07-r20.img

(deleted wrong line)

cd /opt/scripts/tools/developers/
sudo ./update_bootloader.sh

UBOOT Bootloader: u-boot-beagle_x15_ti-v2015.07-r20.img