x86: galileo: Fix boot failure

With latest codes on mainstream master, Intel Galileo board does not
boot unfortunately. Git biset leads to b383d6c0 "bootstage: Convert
to use malloc()".

Disable bootstage support to make it boot again. The root cause needs
to be investigated however.

Fixes: b383d6c0 ("bootstage: Convert to use malloc()")
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>

configs/galileo_defconfig

@@ -6,8 +6,6 @@ CONFIG_GENERATE_PIRQ_TABLE=y
 CONFIG_GENERATE_MP_TABLE=y
 CONFIG_GENERATE_ACPI_TABLE=y
 CONFIG_FIT=y
-CONFIG_BOOTSTAGE=y
-CONFIG_BOOTSTAGE_REPORT=y
 CONFIG_USE_BOOTARGS=y
 CONFIG_BOOTARGS="root=/dev/sdb3 init=/sbin/init rootwait ro"
 CONFIG_SYS_CONSOLE_INFO_QUIET=y
@@ -25,7 +23,6 @@ CONFIG_CMD_DHCP=y
 # CONFIG_CMD_NFS is not set
 CONFIG_CMD_PING=y
 CONFIG_CMD_TIME=y
-CONFIG_CMD_BOOTSTAGE=y
 CONFIG_CMD_EXT2=y
 CONFIG_CMD_EXT4=y
 CONFIG_CMD_EXT4_WRITE=y