kernel: Move kernel module dir cleanup/creation to module install target

* The directories used by the kernel module install rules are performed
  as part of the rules in the kernel build itself. This is likely a
  leftover from before kernel module install was separated.

Change-Id: Iee2f73a0f8e0f274b1c2931ba57277ff14d7f5cc

build/tasks/kernel.mk

@@ -212,9 +212,6 @@ $(KERNEL_CONFIG): $(KERNEL_DEFCONFIG_SRC) $(KERNEL_ADDITIONAL_CONFIG_OUT)
 .PHONY: TARGET_KERNEL_BINARIES
 TARGET_KERNEL_BINARIES: $(KERNEL_CONFIG)
 	@echo "Building Kernel"
-	$(hide) rm -rf $(KERNEL_MODULES_OUT)
-	$(hide) mkdir -p $(KERNEL_MODULES_OUT)
-	$(hide) rm -rf $(KERNEL_DEPMOD_STAGING_DIR)
 	$(PATH_OVERRIDE) $(MAKE) $(KERNEL_MAKE_FLAGS) -C $(KERNEL_SRC) O=$(KERNEL_OUT) ARCH=$(KERNEL_ARCH) $(KERNEL_CROSS_COMPILE) $(KERNEL_CLANG_TRIPLE) $(KERNEL_CC) $(BOARD_KERNEL_IMAGE_NAME)
 	$(hide) if grep -q '^CONFIG_OF=y' $(KERNEL_CONFIG); then \
 			echo "Building DTBs"; \
@@ -227,6 +224,9 @@ TARGET_KERNEL_BINARIES: $(KERNEL_CONFIG)
 
 .PHONY: INSTALLED_KERNEL_MODULES
 INSTALLED_KERNEL_MODULES: depmod-host
+	$(hide) rm -rf $(KERNEL_MODULES_OUT)
+	$(hide) mkdir -p $(KERNEL_MODULES_OUT)
+	$(hide) rm -rf $(KERNEL_DEPMOD_STAGING_DIR)
 	$(hide) if grep -q '^CONFIG_MODULES=y' $(KERNEL_CONFIG); then \
 			echo "Installing Kernel Modules"; \
 			$(PATH_OVERRIDE) $(MAKE) $(KERNEL_MAKE_FLAGS) -C $(KERNEL_SRC) O=$(KERNEL_OUT) ARCH=$(KERNEL_ARCH) $(KERNEL_CROSS_COMPILE) $(KERNEL_CLANG_TRIPLE) $(KERNEL_CC) INSTALL_MOD_PATH=../../$(KERNEL_MODULES_INSTALL) modules_install && \