coreboot: Enable ms command

This is useful when looking for tables in memory. Enable it for coreboot.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
diff --git a/configs/coreboot_defconfig b/configs/coreboot_defconfig
index f6ffb51..058caf0 100644
--- a/configs/coreboot_defconfig
+++ b/configs/coreboot_defconfig
@@ -24,6 +24,7 @@
 CONFIG_PCI_INIT_R=y
 CONFIG_HUSH_PARSER=y
 CONFIG_SYS_PBSIZE=532
+CONFIG_CMD_MEM_SEARCH=y
 CONFIG_CMD_IDE=y
 CONFIG_CMD_MMC=y
 CONFIG_CMD_PART=y