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/M52277EVB_defconfig b/configs/M52277EVB_defconfig
index 9772fa2..e756401 100644
--- a/configs/M52277EVB_defconfig
+++ b/configs/M52277EVB_defconfig
@@ -12,6 +12,7 @@
 # CONFIG_CMD_NET is not set
 # CONFIG_CMD_NFS is not set
 CONFIG_CMD_CACHE=y
+CONFIG_CMD_DATE=y
 CONFIG_MTD_NOR_FLASH=y
 CONFIG_SPI_FLASH=y
 CONFIG_SPI_FLASH_STMICRO=y