mesa: rename mesa-dri recipe to just mesa

mesa: rename mesa-dri recipe to just mesa

Rename mesa-dri recipes to just mesa. Also, replace all references to
mesa-dri in all recipes/configs.

The reason for this renaming (quote from bugzilla):

"mesa-dri is a artefact of mesa-xlib existing, which doesn't anymore.
mesa-dri should be renamed to mesa."

[YOCTO #3385]

(From OE-Core rev: c8bbb9983bcc7cfc5332e89c3e8148505b4ca83f)

Signed-off-by: Laurentiu Palcu <laurentiu.palcu@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>