ppc4xx: Add basic support for AMCC 460EX/460GT (3/5)

This patch adds basic support for the AMCC 460EX/460GT PPC's.

Signed-off-by: Stefan Roese <sr@denx.de>
diff --git a/include/4xx_i2c.h b/include/4xx_i2c.h
index 7c79bd1..2df4fbd 100644
--- a/include/4xx_i2c.h
+++ b/include/4xx_i2c.h
@@ -41,7 +41,8 @@
 #endif /* CONFIG_I2C_MULTI_BUS */
 
 #if defined(CONFIG_440EP) || defined(CONFIG_440GR) || \
-    defined(CONFIG_440EPX) || defined(CONFIG_440GRX)
+    defined(CONFIG_440EPX) || defined(CONFIG_440GRX) || \
+    defined(CONFIG_460EX) || defined(CONFIG_460GT)
 #define I2C_BASE_ADDR	(CFG_PERIPHERAL_BASE + 0x00000700 + I2C_BUS_OFFS)
 #elif defined(CONFIG_440) || defined(CONFIG_405EX)
 /* all remaining 440 variants */