mtd: spi-nor: remove unnecessary leading space from dbg print

As Cyrille noted [1], this line is wrong.

[1] http://lists.infradead.org/pipermail/linux-mtd/2015-September/061725.html



Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Cc: Cyrille Pitchen <cyrille.pitchen@atmel.com>