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/include/configs/sunxi-common.h b/include/configs/sunxi-common.h
index 790e704..b4dfb3c 100644
--- a/include/configs/sunxi-common.h
+++ b/include/configs/sunxi-common.h
@@ -212,7 +212,7 @@
 
 #if defined CONFIG_I2C0_ENABLE || defined CONFIG_I2C1_ENABLE || \
     defined CONFIG_I2C2_ENABLE || defined CONFIG_I2C3_ENABLE || \
-    defined CONFIG_I2C4_ENABLE
+    defined CONFIG_I2C4_ENABLE || defined CONFIG_R_I2C_ENABLE
 #define CONFIG_SYS_I2C
 #define CONFIG_SYS_I2C_MVTWSI
 #define CONFIG_SYS_I2C_SPEED		400000