MAINTAINERS: update Tegra section to capture all Tegra files

The intent is to ensure that all Tegra-related patches are sent to the
linux-tegra@ mailing list, so people can keep up-to-date on all misc
driver changes.

Doing this with a keyword is far simpler and more compact than listing
all Tegra-related drivers, even if wildcards were used.

Words such as integrate or integrator are common.  Ensure the character
right before "tegra" isn't a-z (case-insensitive), to make sure the
keyword doesn't match those.

The only files that the keyword doesn't match are the NVEC driver.  Add
the linux-tegra mailing list to the NVEC entry to solve this.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Cc: Joe Perches <joe@perches.com>
Cc: Julian Andres Klode <jak@jak-linux.org>
Cc: Marc Dietrich <marvin24@gmx.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

MAINTAINERS

@@ -7540,6 +7540,7 @@ STAGING - NVIDIA COMPLIANT EMBEDDED CONTROLLER INTERFACE (nvec)
 M:	Julian Andres Klode <jak@jak-linux.org>
 M:	Marc Dietrich <marvin24@gmx.de>
 L:	ac100@lists.launchpad.net (moderated for non-subscribers)
+L:	linux-tegra@vger.kernel.org
 S:	Maintained
 F:	drivers/staging/nvec/
 
@@ -7832,9 +7833,7 @@ L:	linux-tegra@vger.kernel.org
 Q:	http://patchwork.ozlabs.org/project/linux-tegra/list/
 T:	git git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra.git
 S:	Supported
-F:	arch/arm/mach-tegra
-F:	arch/arm/boot/dts/tegra*
-F:	arch/arm/configs/tegra_defconfig
+K:	(?i)[^a-z]tegra
 
 TEHUTI ETHERNET DRIVER
 M:	Andy Gospodarek <andy@greyhouse.net>