permission to be maintainer for Xtensa port

[Bob Wilson]

Yesterday I committed my changes to add support for Tensilica's Xtensa 
processors.  Thank you very much to everyone who helped, especially to 
Richard Henderson who took the time to review my code and provided a 
number of good suggestions for changes.

Now that the Xtensa code is part of GCC, I'm thinking about maintaining 
it.  I expect to continue making changes in the Xtensa-specific files. 
Would it be OK for me to be the maintainer for this port?  That will 
make it a lot easier for me to continue improving the Xtensa code, 
without waiting for volunteers to review every little change.

I understand the SC needs to approve such a request, so assuming that 
the SC is reading this list, please let me know what you decide.  Thanks!

--Bob