powerpc/t4qds: Fix disabling remote I2C connection

Only clear IRE bit in qixis brdcfg5 register and keep other bits
unchanged.

Signed-off-by: Ed Swarthout <Ed.Swarthout@freescale.com>
Signed-off-by: York Sun <yorksun@freescale.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>
diff --git a/board/freescale/t4qds/t4240qds_qixis.h b/board/freescale/t4qds/t4240qds_qixis.h
index efb718d..485353d 100644
--- a/board/freescale/t4qds/t4240qds_qixis.h
+++ b/board/freescale/t4qds/t4240qds_qixis.h
@@ -42,7 +42,7 @@
 #define QIXIS_DDRCLK_125		0x2
 #define QIXIS_DDRCLK_133		0x3
 
-#define BRDCFG5_RESET			0x00
+#define BRDCFG5_IRE			0x20	/* i2c Remote i2c1 enable */
 
 #define BRDCFG12_SD3EN_MASK		0x20
 #define BRDCFG12_SD3MX_MASK		0x08