powerpc: P4080DS: Remove macro CONFIG_P4080DS

Use CONFIG_TARGET_P4080DS instead.

Signed-off-by: York Sun <york.sun@nxp.com>
diff --git a/board/freescale/common/Makefile b/board/freescale/common/Makefile
index 2797348..c26ada1 100644
--- a/board/freescale/common/Makefile
+++ b/board/freescale/common/Makefile
@@ -54,7 +54,7 @@
 obj-$(CONFIG_TARGET_P1022DS)		+= ics307_clk.o
 obj-$(CONFIG_P2020DS)		+= ics307_clk.o
 obj-$(CONFIG_TARGET_P3041DS)		+= ics307_clk.o
-obj-$(CONFIG_P4080DS)		+= ics307_clk.o
+obj-$(CONFIG_TARGET_P4080DS)		+= ics307_clk.o
 obj-$(CONFIG_P5020DS)		+= ics307_clk.o
 obj-$(CONFIG_P5040DS)		+= ics307_clk.o
 obj-$(CONFIG_VSC_CROSSBAR)    += vsc3316_3308.o
@@ -67,7 +67,7 @@
 # deal with common files for P-series corenet based devices
 obj-$(CONFIG_TARGET_P2041RDB)	+= p_corenet/
 obj-$(CONFIG_TARGET_P3041DS)	+= p_corenet/
-obj-$(CONFIG_P4080DS)	+= p_corenet/
+obj-$(CONFIG_TARGET_P4080DS)	+= p_corenet/
 obj-$(CONFIG_P5020DS)	+= p_corenet/
 obj-$(CONFIG_P5040DS)	+= p_corenet/