staging/zsmalloc: Fixed up incorrect formatted comments

The existing comments are using an odd style. Fixed them up to adhere
to the StyleGuide. No code changes.

Change-Id: I24a720787c00a79883cb268ebf1257b525655f7d
Signed-off-by: Sara Bird <sara.bird.iar@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Git-commit: 396b7fd6f9668c04f20ee6daca3054f5c5ec1056
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git


Signed-off-by: Olav Haugan <ohaugan@codeaurora.org>