[PATCH] mtd: brcmnand: drop unused subpage_read() support

[Brian Norris]

On Mon, Nov 16, 2015 at 05:04:08PM -0800, Brian Norris wrote:
> AFAIR this driver was never tested with subpage read support, and this
> code is currently unused because we don't set the NAND_SUBPAGE_READ
> flag. It can be resurrected if someone tests it properly.
> 
> Signed-off-by: Brian Norris <computersforpeace at gmail.com>

Pushed to l2-mtd.git