cmd: add Kconfig option for 'date' command

Signed-off-by: Chris Packham <judge.packham@gmail.com>
[trini: default y if DM_RTC, re-sync]
Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/configs/haleakala_defconfig b/configs/haleakala_defconfig
index c8a72f6..9ff43da 100644
--- a/configs/haleakala_defconfig
+++ b/configs/haleakala_defconfig
@@ -18,6 +18,7 @@
 CONFIG_CMD_MII=y
 CONFIG_CMD_PING=y
 CONFIG_CMD_SNTP=y
+CONFIG_CMD_DATE=y
 CONFIG_CMD_DIAG=y
 # CONFIG_MMC is not set
 CONFIG_MTD_NOR_FLASH=y