MAINTAINERS: Update Tegra DRM entry

Change email to my private address, point file entry to the new location
below drivers/gpu/host1x, add include/uapi/drm/tegra_drm.h to maintained
file list and update git tree.

Furthermore, Terje Bergström will be co-maintaining.
Signed-off-by: NThierry Reding <thierry.reding@gmail.com>

MAINTAINERS

@@ -2697,12 +2697,14 @@ F:	include/drm/exynos*
 F:	include/uapi/drm/exynos*
 
 DRM DRIVERS FOR NVIDIA TEGRA
-M:	Thierry Reding <thierry.reding@avionic-design.de>
+M:	Thierry Reding <thierry.reding@gmail.com>
+M:	Terje Bergström <tbergstrom@nvidia.com>
 L:	dri-devel@lists.freedesktop.org
 L:	linux-tegra@vger.kernel.org
-T:	git git://gitorious.org/thierryreding/linux.git
+T:	git git://anongit.freedesktop.org/tegra/linux.git
 S:	Maintained
-F:	drivers/gpu/drm/tegra/
+F:	drivers/gpu/host1x/
+F:	include/uapi/drm/tegra_drm.h
 F:	Documentation/devicetree/bindings/gpu/nvidia,tegra20-host1x.txt
 
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