remove last 3 uses of :=, everywhere else uses += or =

Signed-off-by: NJuan Quintela <quintela@redhat.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
Message-Id: 

Makefile.target

@@ -20,7 +20,7 @@ endif
 PROGS=$(QEMU_PROG)
 
 ifeq ($(subst ppc64,ppc,$(ARCH))$(TARGET_BASE_ARCH),ppcppc)
-translate.o: QEMU_CFLAGS := $(QEMU_CFLAGS) $(call cc-option, $(QEMU_CFLAGS), -fno-unit-at-a-time,)
+translate.o: QEMU_CFLAGS += $(call cc-option, $(QEMU_CFLAGS), -fno-unit-at-a-time,)
 endif
 
 LIBS+=-lm
@@ -107,7 +107,7 @@ ifeq ($(TARGET_ARCH), i386)
 obj-y += vm86.o
 endif
 
-nwfpe-obj-y := fpa11.o fpa11_cpdo.o fpa11_cpdt.o fpa11_cprt.o fpopcode.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
 obj-arm-y +=  $(addprefix nwfpe/, $(nwfpe-obj-y))
 obj-arm-y += arm-semi.o
@@ -174,7 +174,7 @@ sound-obj-$(CONFIG_ADLIB) += fmopl.o adlib.o
 sound-obj-$(CONFIG_GUS) += gus.o gusemu_hal.o gusemu_mixer.o
 sound-obj-$(CONFIG_CS4231A) += cs4231a.o
 
-adlib.o fmopl.o: QEMU_CFLAGS := ${QEMU_CFLAGS} -DBUILD_Y8950=0
+adlib.o fmopl.o: QEMU_CFLAGS += -DBUILD_Y8950=0
 
 QEMU_CFLAGS += $(VNC_TLS_CFLAGS)
 QEMU_CFLAGS += $(VNC_SASL_CFLAGS)