mtd: rawnand: atmel: Use uintptr_t casts instead of unsigned int

When casting a pointer to an unsigned int, uintptr_t should be used to
cope with the pointer size differences between 32-bit and 64-bit
architectures.

This is needed if we want to allow compilation of this driver when
COMPILE_TEST=y.
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>

drivers/mtd/nand/raw/atmel/nand-controller.c

@@ -2050,7 +2050,7 @@ atmel_smc_nand_controller_init(struct atmel_smc_nand_controller *nc)
 		return ret;
 	}
 
-	nc->ebi_csa_offs = (unsigned int)match->data;
+	nc->ebi_csa_offs = (uintptr_t)match->data;
 
 	/*
 	 * The at91sam9263 has 2 EBIs, if the NAND controller is under EBI1