powerpc/85xx: add T4080 SoC support

The T4080 SoC is a low-power version of the T4160.
T4080 combines 4 dual-threaded Power Architecture e6500
cores with single cluster and two memory complexes.

Signed-off-by: Shengzhou Liu <Shengzhou.Liu@freescale.com>
diff --git a/drivers/net/fm/Makefile b/drivers/net/fm/Makefile
index ee5d768..5ae3b16 100644
--- a/drivers/net/fm/Makefile
+++ b/drivers/net/fm/Makefile
@@ -32,5 +32,6 @@
 obj-$(CONFIG_PPC_T2081) += t2080.o
 obj-$(CONFIG_PPC_T4240) += t4240.o
 obj-$(CONFIG_PPC_T4160) += t4240.o
+obj-$(CONFIG_PPC_T4080) += t4240.o
 obj-$(CONFIG_PPC_B4420) += b4860.o
 obj-$(CONFIG_PPC_B4860) += b4860.o