Merge tag 'tegra-l4t-r21.6' into toradex_tk1_l4t_r21.6

Merge NVIDIA's latest Linux for Tegra aka L4T R21.6 Linux kernel changes
from git://nv-tegra.nvidia.com/linux-3.10.git commit:

b271e8fa67a6d9c4600274a25636cfe00fdd1b68

Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Acked-by: Dominik Sliwa <dominik.sliwa@toradex.com>

diff --cc arch/arm/mach-tegra/board-ardbeg.c
Simple merge

diff --cc arch/arm/mach-tegra/tegra_cl_dvfs.c
Simple merge

diff --cc drivers/gpu/nvgpu/gk20a/mm_gk20a.c
Simple merge

diff --cc drivers/spi/spi-tegra114.c
Simple merge

diff --cc drivers/usb/gadget/tegra_udc.c
Simple merge