exynos5: Enable tps65090 on exynos5-dt

The TPS65090 pmic chip can be on exynos5250 boards. Therefore,
select the appropriate config option for TPS65090 devices.

This commit should really use exynos5-dt.c, when it is available.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
diff --git a/include/configs/exynos5-dt.h b/include/configs/exynos5-dt.h
index 5a9b1b4..b830495 100644
--- a/include/configs/exynos5-dt.h
+++ b/include/configs/exynos5-dt.h
@@ -259,6 +259,7 @@
 /* PMIC */
 #define CONFIG_POWER
 #define CONFIG_POWER_I2C
+#define CONFIG_POWER_TPS65090
 
 /* Ethernet Controllor Driver */
 #ifdef CONFIG_CMD_NET