configs: sandbox64: Increase console record size to 0x6000

Align the sandbox64 defconfig with sandbox defconfig. Increase the
console record size. This fixes ut_bootstd_bootflow_cmd_scan_e .

Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/configs/sandbox64_defconfig b/configs/sandbox64_defconfig
index 55a2b9a..0a694a5 100644
--- a/configs/sandbox64_defconfig
+++ b/configs/sandbox64_defconfig
@@ -21,7 +21,7 @@
 CONFIG_BOOTSTAGE_STASH=y
 CONFIG_BOOTSTAGE_STASH_SIZE=0x4096
 CONFIG_CONSOLE_RECORD=y
-CONFIG_CONSOLE_RECORD_OUT_SIZE=0x1000
+CONFIG_CONSOLE_RECORD_OUT_SIZE=0x6000
 CONFIG_PRE_CONSOLE_BUFFER=y
 CONFIG_DISPLAY_BOARDINFO_LATE=y
 CONFIG_CMD_CPU=y