Convert CONFIG_CMD_SATA to Kconfig

This converts the following to Kconfig:
   CONFIG_CMD_SATA

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
diff --git a/configs/udoo_defconfig b/configs/udoo_defconfig
index 3bf5505..7e52bdc 100644
--- a/configs/udoo_defconfig
+++ b/configs/udoo_defconfig
@@ -19,6 +19,7 @@
 # CONFIG_CMD_IMLS is not set
 CONFIG_CMD_MMC=y
 CONFIG_CMD_GPIO=y
+CONFIG_CMD_SATA=y
 CONFIG_CMD_DHCP=y
 CONFIG_CMD_MII=y
 CONFIG_CMD_PING=y