[ARM] pxa: introduce CONFIG_MACH_ZYLONITE{300,320} for CPU_PXA* removing

Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
diff --git a/arch/arm/mach-pxa/Makefile b/arch/arm/mach-pxa/Makefile
index cdaf888..b5d29e6 100644
--- a/arch/arm/mach-pxa/Makefile
+++ b/arch/arm/mach-pxa/Makefile
@@ -29,11 +29,8 @@
 # Intel/Marvell Dev Platforms
 obj-$(CONFIG_ARCH_LUBBOCK)	+= lubbock.o
 obj-$(CONFIG_MACH_MAINSTONE)	+= mainstone.o
-ifeq ($(CONFIG_MACH_ZYLONITE),y)
-  obj-y				+= zylonite.o
-  obj-$(CONFIG_CPU_PXA300)	+= zylonite_pxa300.o
-  obj-$(CONFIG_CPU_PXA320)	+= zylonite_pxa320.o
-endif
+obj-$(CONFIG_MACH_ZYLONITE300)	+= zylonite.o zylonite_pxa300.o
+obj-$(CONFIG_MACH_ZYLONITE320)	+= zylonite.o zylonite_pxa320.o
 obj-$(CONFIG_MACH_LITTLETON)	+= littleton.o
 obj-$(CONFIG_MACH_TAVOREVB)	+= tavorevb.o
 obj-$(CONFIG_MACH_SAAR)		+= saar.o