cma: Store a name in the cma structure

Frameworks that may want to enumerate CMA heaps (e.g. Ion) will find it
useful to have an explicit name attached to each region. Store the name
in each CMA structure.

Change-Id: Ia4d4fdc7b6044bffe3238e53e78e4e47206d7f91
Signed-off-by: Laura Abbott <labbott@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Git-commit: f318dd083c8128c50e48ceb8c3e812e52800fc4f
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git


Signed-off-by: Prakash Gupta <guptap@codeaurora.org>