sunxi: Add support for the I2C controller which is part of the PRCM

Signed-off-by: Jelle van der Waa <jelle@vdwaa.nl>
[hdegoede@redhat.com: Minor cleanups]
Signed-off-by: Hans de Goede <hdegoede@redhat.com>

applied with fixing 2 checkpatch warnings:
WARNING: please, no space before tabs

Signed-off-by: Heiko Schocher <hs@denx.de>
diff --git a/drivers/i2c/mvtwsi.c b/drivers/i2c/mvtwsi.c
index 30a5b11..5f993b9 100644
--- a/drivers/i2c/mvtwsi.c
+++ b/drivers/i2c/mvtwsi.c
@@ -128,6 +128,10 @@
 	case 4:
 		return (struct mvtwsi_registers *) CONFIG_I2C_MVTWSI_BASE4;
 #endif
+#ifdef CONFIG_I2C_MVTWSI_BASE5
+	case 5:
+		return (struct mvtwsi_registers *) CONFIG_I2C_MVTWSI_BASE5;
+#endif
 	default:
 		printf("Missing mvtwsi controller %d base\n", adap->hwadapnr);
 		break;
@@ -487,3 +491,10 @@
 			 CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE, 4)
 
 #endif
+#ifdef CONFIG_I2C_MVTWSI_BASE5
+U_BOOT_I2C_ADAP_COMPLETE(twsi5, twsi_i2c_init, twsi_i2c_probe,
+			 twsi_i2c_read, twsi_i2c_write,
+			 twsi_i2c_set_bus_speed,
+			 CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE, 5)
+
+#endif