use TARGET_<arch name> for selection

Signed-off-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Message-Id: 
diff --git a/Makefile.target b/Makefile.target
index a294e6b..6553ecf 100644
--- a/Makefile.target
+++ b/Makefile.target
@@ -47,14 +47,8 @@
 libobj-$(CONFIG_NOSOFTFLOAT) += fpu/softfloat-native.o
 libobj-y += op_helper.o helper.o
 libobj-$(CONFIG_NEED_MMU) += mmu.o
-
-ifeq ($(TARGET_BASE_ARCH), arm)
-libobj-y += neon_helper.o iwmmxt_helper.o
-endif
-
-ifeq ($(TARGET_BASE_ARCH), alpha)
-libobj-y += alpha_palcode.o
-endif
+libobj-$(TARGET_ARM) += neon_helper.o iwmmxt_helper.o
+libobj-$(TARGET_ALPHA) += alpha_palcode.o
 
 # NOTE: the disassembler code is only needed for debugging
 libobj-y += disas.o
@@ -103,9 +97,7 @@
 obj-$(TARGET_HAS_BFLT) += flatload.o
 obj-$(TARGET_HAS_ELFLOAD32) += elfload32.o
 
-ifeq ($(TARGET_ARCH), i386)
-obj-y += vm86.o
-endif
+obj-$(TARGET_I386) += vm86.o
 
 nwfpe-obj-y = fpa11.o fpa11_cpdo.o fpa11_cpdt.o fpa11_cprt.o fpopcode.o
 nwfpe-obj-y += single_cpdo.o double_cpdo.o extended_cpdo.o