rename CFG_ENV_IS_IN_NAND in CONFIG_ENV_IS_IN_NAND

README

common/cmd_nvedit.c

common/env_common.c

common/env_nand.c

include/configs/MPC8313ERDB.h

include/configs/PMC440.h

include/configs/acadia.h

include/configs/at91sam9260ek.h

include/configs/at91sam9261ek.h

include/configs/at91sam9263ek.h

include/configs/at91sam9rlek.h

include/configs/bamboo.h

include/configs/canyonlands.h

include/configs/davinci_dvevm.h

include/configs/davinci_schmoogie.h

include/configs/davinci_sffsdr.h

include/configs/davinci_sonata.h

include/configs/delta.h

include/configs/kilauea.h

include/configs/omap2420h4.h