Fix some more printf() format issues.

board/armadillo/flash.c

board/delta/nand.c

board/integratorcp/flash.c

board/mp2usb/flash.c

board/versatile/flash.c

board/zylonite/nand.c

common/cmd_flash.c

common/cmd_nvedit.c

common/cmd_onenand.c

common/env_onenand.c

cpu/pxa/mmc.c

drivers/mtd/dataflash.c

drivers/net/smc911x.c

drivers/usb/usbdcore.c

fs/jffs2/jffs2_1pass.c

net/net.c