tegra: nyan-big: Enable bootstage

Enable full bootstage support so we can time SPL and U-Boot.
Signed-off-by: NSimon Glass <sjg@chromium.org>
Tested-by: NMarcel Ziswiler <marcel.ziswiler@toradex.com>
Tested-on: Beaver, Jetson-TK1

configs/nyan-big_defconfig

@@ -6,6 +6,10 @@ CONFIG_DEFAULT_DEVICE_TREE="tegra124-nyan-big"
 CONFIG_FIT=y
 CONFIG_FIT_BEST_MATCH=y
 CONFIG_OF_SYSTEM_SETUP=y
+CONFIG_BOOTSTAGE=y
+CONFIG_SPL_BOOTSTAGE=y
+CONFIG_BOOTSTAGE_STASH=y
+CONFIG_BOOTSTAGE_STASH_ADDR=0x83000000
 CONFIG_SYS_STDIO_DEREGISTER=y
 CONFIG_SYS_PROMPT="Tegra124 (Nyan-big) # "
 # CONFIG_CMD_IMI is not set
@@ -23,6 +27,7 @@ CONFIG_CMD_GPIO=y
 # CONFIG_CMD_SETEXPR is not set
 # CONFIG_CMD_NFS is not set
 CONFIG_CMD_BMP=y
+CONFIG_CMD_BOOTSTAGE=y
 CONFIG_CMD_CACHE=y
 CONFIG_CMD_PMIC=y
 CONFIG_CMD_REGULATOR=y