ftgmac100: support of gigabit eth ftgmac100

Add Faraday's ftgmac100 (gigabit ethernet)
MAC controller's driver.

Signed-off-by: Macpaul Lin <macpaul@andestech.com>
diff --git a/README b/README
index 68f5fb0..d7a23cd 100644
--- a/README
+++ b/README
@@ -861,6 +861,18 @@
 			Define this to use i/o functions instead of macros
 			(some hardware wont work with macros)
 
+		CONFIG_FTGMAC100
+		Support for Faraday's FTGMAC100 Gigabit SoC Ethernet
+
+			CONFIG_FTGMAC100_EGIGA
+			Define this to use GE link update with gigabit PHY.
+			Define this if FTGMAC100 is connected to gigabit PHY.
+			If your system has 10/100 PHY only, it might not occur
+			wrong behavior. Because PHY usually return timeout or
+			useless data when polling gigabit status and gigabit
+			control registers. This behavior won't affect the
+			correctnessof 10/100 link speed update.
+
 		CONFIG_SMC911X
 		Support for SMSC's LAN911x and LAN921x chips