common/cmd_nand.c: Fix GCC 4.6 warning

cmd_nand.c: In function 'raw_access':
cmd_nand.c:397:9: warning: variable 'rwsize' set but not used
[-Wunused-but-set-variable]

Signed-off-by: Anatolij Gustschin <agust@denx.de>
Cc: Scott Wood <scottwood@freescale.com>
1 file changed