Fix gcc7 complaining about memset()

firmware.c: In function 'firmware_dump':
firmware.c:112:3: error: 'memset' used with length equal to number of
                  elements without multiplication by element size
                  [-Werror=memset-elt-size]
   memset(all_ff, 255, 256);
   ^~~~~~

Change-Id: I10da0fed537125d10ac81484e26701a5f163bfe9
Signed-off-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-on: https://review.coreboot.org/22544
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin Roth <martinroth@google.com>
1 file changed