Revert "video: tegra: update drivers"

This reverts commit 146daac76f422463587763a83d7545a5605f9833.
ARM: tegra: dvfs: Move common core voltage capping code

Moved common for Tegra3 and Tegra11 core voltage capping code to
a separate file.

Change-Id: I69c365abdaba80dae64d07c3c3c1c9f8d42cff19
Signed-off-by: Alex Frid <afrid@nvidia.com>
Reviewed-on: http://git-master/r/193602
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Diwakar Tundlam <dtundlam@nvidia.com>
Reviewed-by: Seshendra Gadagottu <sgadagottu@nvidia.com>
Reviewed-by: Kaz Fukuoka <kfukuoka@nvidia.com>

Conflicts:
	arch/arm/mach-tegra/Makefile
	arch/arm/mach-tegra/dvfs.h
	arch/arm/mach-tegra/tegra11_dvfs.c
	arch/arm/mach-tegra/tegra3_dvfs.c