[PATCH] mtd: mtdram: check offs and len in mtdram->erase

[Brian Norris]

On Tue, Jul 21, 2015 at 04:30:20PM +0800, Dongsheng Yang wrote:
> We should prevent user to erasing mtd device with
> an unaligned offset or length.
> 
> Signed-off-by: Dongsheng Yang <yangds.fnst at cn.fujitsu.com>

Seems reasonable. Pushed to l2-mtd.git.