ec/lenovo/h8/h8.c: Use sizeof()

Use 'sizeof(ecfw)' instead of 'sizeof ecfw'.
sizeof operator should only be used for types and variables require sizeof().

Change-Id: Ifae1680917bb0ce610e6ba753741aae233a71103
Signed-off-by: Elyes Haouas <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/77154
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
Reviewed-by: Felix Singer <service+coreboot-gerrit@felixsinger.de>

src/ec/lenovo/h8/h8.c

@@ -86,7 +86,7 @@ static void h8_log_ec_version(void)
 	u8 len;
 	u16 fwvh, fwvl;
 
-	len = h8_build_id_and_function_spec_version(ecfw, sizeof ecfw - 1);
+	len = h8_build_id_and_function_spec_version(ecfw, sizeof(ecfw) - 1);
 	ecfw[len] = 0;
 
 	fwvh = ec_read(0xe9);