board/gw8260/flash.c: Fix GCC 4.6 build warning

Fix:
flash.c: In function 'flash_init':
flash.c:81:16: warning: variable 'size' set but not used
[-Wunused-but-set-variable]

Signed-off-by: Wolfgang Denk <wd@denx.de>
Cc: Oliver Brown <obrown@adventnetworks.com>
1 file changed