mtd: pasemi_nand.c: remove superfluous name cast

device_driver.name is "const char *"

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Olof Johansson <olof@lixom.net>
Cc: linux-mtd@lists.infradead.org
Signed-off-by: Brian Norris <computersforpeace@gmail.com>