Staging: zram: zram_drv.c: Fixed Error of trailing whitespace

Fixed by removing trailing whitespace

Change-Id: If43b8acf92d4c504c443c8e4c7995de3e410aca0
Signed-off-by: Kumar Gaurav <kumargauravgupta3@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Git-commit: a539c72a195c081d950475c2945cb82d80be9b66
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git


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