AndroidKernel: Explicitly mark certain targets as phony

kerneltags and kernelconfig are phony targets, so mark them
with .PHONY.

Change-Id: If2b6d9c20f8954f217c68dd8dec2360592f74492
Signed-off-by: Bruce Levy <blevy@codeaurora.org>

AndroidKernel.mk

@@ -187,9 +187,11 @@ $(KERNEL_HEADERS_INSTALL): $(KERNEL_OUT)
 			echo $(KERNEL_CONFIG_OVERRIDE) >> $(KERNEL_OUT)/.config; \
 			$(MAKE) -C $(TARGET_KERNEL_SOURCE) O=$(BUILD_ROOT_LOC)$(KERNEL_OUT) $(KERNEL_MAKE_ENV) ARCH=$(KERNEL_ARCH) CROSS_COMPILE=$(KERNEL_CROSS_COMPILE) $(real_cc) oldconfig; fi
 
+.PHONY: kerneltags
 kerneltags: $(KERNEL_OUT) $(KERNEL_CONFIG)
 	$(MAKE) -C $(TARGET_KERNEL_SOURCE) O=$(BUILD_ROOT_LOC)$(KERNEL_OUT) $(KERNEL_MAKE_ENV) ARCH=$(KERNEL_ARCH) CROSS_COMPILE=$(KERNEL_CROSS_COMPILE) $(real_cc) tags
 
+.PHONY: kernelconfig
 kernelconfig: $(KERNEL_OUT) $(KERNEL_CONFIG)
 	env KCONFIG_NOTIMESTAMP=true \
 	     $(MAKE) -C $(TARGET_KERNEL_SOURCE) O=$(BUILD_ROOT_LOC)$(KERNEL_OUT) $(KERNEL_MAKE_ENV) ARCH=$(KERNEL_ARCH) CROSS_COMPILE=$(KERNEL_CROSS_COMPILE) $(real_cc) menuconfig