cris: nand: remove useless mtd->priv = chip assignments

mtd_to_nand() now uses the container_of() approach to transform an
mtd_info pointer into a nand_chip one. Drop useless mtd->priv
assignments from NAND controller drivers.
Signed-off-by: NBoris Brezillon <boris.brezillon@free-electrons.com>
Acked-by: NJesper Nilsson <jesper.nilsson@axis.com>
Signed-off-by: NBrian Norris <computersforpeace@gmail.com>

arch/cris/arch-v32/drivers/mach-a3/nandflash.c

@@ -149,9 +149,6 @@ struct mtd_info *__init crisv32_nand_flash_probe(void)
 	this = &wrapper->chip;
 	crisv32_mtd = nand_to_mtd(this);
 
-	/* Link the private data with the MTD structure */
-	crisv32_mtd->priv = this;
-
 	/* Set address of NAND IO lines */
 	this->IO_ADDR_R = read_cs;
 	this->IO_ADDR_W = write_cs;

arch/cris/arch-v32/drivers/mach-fs/nandflash.c

@@ -140,9 +140,6 @@ struct mtd_info *__init crisv32_nand_flash_probe(void)
 	bif_cfg.gated_csp1 = regk_bif_core_wr;
 	REG_WR(bif_core, regi_bif_core, rw_grp3_cfg, bif_cfg);
 
-	/* Link the private data with the MTD structure */
-	crisv32_mtd->priv = this;
-
 	/* Set address of NAND IO lines */
 	this->IO_ADDR_R = read_cs;
 	this->IO_ADDR_W = write_cs;