Add MAINTAINERS file

This may be overkill for a project as small as the unit tests now but
perhaps it pays to be explicit?
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

MAINTAINERS

+KVM Unit Tests Maintainers
+==========================
+
+The intention of this file is not to establish who owns what portions of the
+code base, but to provide a set of names that developers can consult when they
+have a question about a particular subset and also to provide a set of names
+to be CC'd when submitting a patch to obtain appropriate review.
+
+In general, if you have a question about inclusion of a patch, you
+should consult the KVM mailing list <kvm@vger.kernel.org> and not any
+specific individual privately.
+
+Descriptions of section entries:
+
+	M: Mail patches to: FullName <address@domain>
+	L: Mailing list that is relevant to this area
+	W: Web-page with status/info
+	Q: Patchwork web based patch tracking system site
+	T: SCM tree type and location.  Type is one of: git, hg, quilt, stgit.
+	S: Status, one of the following:
+	   Supported:	Someone is actually paid to look after this.
+	   Maintained:	Someone actually looks after it.
+	   Odd Fixes:	It has a maintainer but they don't have time to do
+			much other than throw the odd patch in. See below.
+	   Orphan:	No current maintainer [but maybe you could take the
+			role as you write your new code].
+	   Obsolete:	Old code. Something tagged obsolete generally means
+			it has been replaced by a better system and you
+			should be using that.
+	F: Files and directories with wildcard patterns.
+	   A trailing slash includes all files and subdirectory files.
+	   F:	drivers/net/	all files in and below drivers/net
+	   F:	drivers/net/*	all files in drivers/net, but not below
+	   F:	*/net/*		all files in "any top level directory"/net
+	   One pattern per line.  Multiple F: lines acceptable.
+	X: Files and directories that are NOT maintained, same rules as F:
+	   Files exclusions are tested before file matches.
+	   Can be useful for excluding a specific subdirectory, for instance:
+	   F:	net/
+	   X:	net/ipv6/
+	   matches all files in and below net excluding net/ipv6/
+	K: Keyword perl extended regex pattern to match content in a
+	   patch or file.  For instance:
+	   K: of_get_profile
+	      matches patches or files that contain "of_get_profile"
+	   K: \b(printk|pr_(info|err))\b
+	      matches patches or files that contain one or more of the words
+	      printk, pr_info or pr_err
+	   One regex pattern per line.  Multiple K: lines acceptable.
+
+
+Maintainers
+-----------
+M: Paolo Bonzini <pbonzini@redhat.com>
+M: Marcelo Tosatti <mtosatti@redhat.com>
+L: kvm@vger.kernel.org
+T: git://git.kernel.org/pub/scm/virt/kvm/kvm-unit-tests.git
+
+Architecture Specific Code:
+---------------------------
+
+ARM
+M: Drew Jones <drjones@redhat.com>
+L: kvm@vger.kernel.org
+L: kvmarm@lists.cs.columbia.edu
+F: arm/*
+F: lib/arm/*
+F: lib/arm64/*
+
+x86
+M: Paolo Bonzini <pbonzini@redhat.com>
+M: Marcelo Tosatti <mtosatti@redhat.com>
+L: kvm@vger.kernel.org
+F: x86/*
+F: lib/x86/*
+