[PATCH] MAINTAINERS: add keyword "tegra" to Tegra section

[Joe Perches]

On Fri, 2013-02-08 at 13:04 -0700, Stephen Warren wrote:
> (?<!in)tegra

This doesn't work well.   It matches too many
words like integral.

I suggest

K:	(?:\btegra\b|\bTEGRA_)