powerpc: T2080, T2081: Remove macro CONFIG_PPC_T2080 and CONFIG_PPC_T2081

Use CONFIG_ARCH_T2080 and CONFIG_ARCH_T2081 instead.

Signed-off-by: York Sun <york.sun@nxp.com>
diff --git a/drivers/net/fm/Makefile b/drivers/net/fm/Makefile
index cf21029..3f219e0 100644
--- a/drivers/net/fm/Makefile
+++ b/drivers/net/fm/Makefile
@@ -30,8 +30,8 @@
 obj-$(CONFIG_PPC_T1022)	+= t1040.o
 obj-$(CONFIG_ARCH_T1023) += t1024.o
 obj-$(CONFIG_ARCH_T1024) += t1024.o
-obj-$(CONFIG_PPC_T2080) += t2080.o
-obj-$(CONFIG_PPC_T2081) += t2080.o
+obj-$(CONFIG_ARCH_T2080) += t2080.o
+obj-$(CONFIG_ARCH_T2081) += t2080.o
 obj-$(CONFIG_PPC_T4240) += t4240.o
 obj-$(CONFIG_PPC_T4160) += t4240.o
 obj-$(CONFIG_PPC_T4080) += t4240.o