I2C: add i2c support for Pantheon platform

Add i2c support to dkb board with pantheon soc.

Acked-by: Heiko Schocher <hs@denx.de>
Acked-by: Prafulla Wadaskar <prafulla@marvell.com>
Signed-off-by: Lei Wen <leiwen@marvell.com>
diff --git a/board/Marvell/dkb/dkb.c b/board/Marvell/dkb/dkb.c
index 72a2d2a..00f73e7 100644
--- a/board/Marvell/dkb/dkb.c
+++ b/board/Marvell/dkb/dkb.c
@@ -36,6 +36,10 @@
 		MFP47_UART2_RXD,
 		MFP48_UART2_TXD,
 
+		/* I2C */
+		MFP53_CI2C_SCL,
+		MFP54_CI2C_SDA,
+
 		MFP_EOC		/*End of configureation*/
 	};
 	/* configure MFP's */