nand.c:36: error: static declaration of 'nand_read_buf' follows non-static declaration
/home/marex/u-boot/include/nand.h:139: error: previous declaration of 'nand_read_buf' was here

Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Cc: Scott Wood <scottwood@freescale.com>
Signed-off-by: Scott Wood <scottwood@freescale.com>