cros_ec: exynos: Use the correct tps65090 driver in each case

Exynos 5250 boards (snow, spring) use the I2C driver but Exynos 5420 boards
cannot due to a hardware design decision. Select the correct driver to use
in each case.

Signed-off-by: Simon Glass <sjg@chromium.org>
Tested-by: Ajay Kumar <ajaykumar.rs@samsung.com>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
diff --git a/include/configs/peach-pit.h b/include/configs/peach-pit.h
index 987cef5..34734ad 100644
--- a/include/configs/peach-pit.h
+++ b/include/configs/peach-pit.h
@@ -30,4 +30,6 @@
 #define LCD_BPP			LCD_COLOR16
 #endif
 
+#define CONFIG_POWER_TPS65090_EC
+
 #endif	/* __CONFIG_PEACH_PIT_H */